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Merge branch 'master' into debug-step

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This commit is contained in:
Ben Burdette 2022-02-04 15:09:40 -07:00
commit dbe3fd3735
178 changed files with 2886 additions and 28663 deletions
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36
.github/workflows/test.yml → .github/workflows/ci.yml vendored
View file

@ -1,4 +1,4 @@
name: "Test"
name: "CI"
on:
pull_request:
@ -25,7 +25,7 @@ jobs:
name: '${{ env.CACHIX_NAME }}'
signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
- run: nix-build -A checks.$(nix-instantiate --eval -E '(builtins.currentSystem)')
- run: nix --experimental-features 'nix-command flakes' flake check -L
check_cachix:
name: Cachix secret present for installer tests
@ -74,3 +74,35 @@ jobs:
install_url: '${{needs.installer.outputs.installerURL}}'
install_options: "--tarball-url-prefix https://${{ env.CACHIX_NAME }}.cachix.org/serve"
- run: nix-instantiate -E 'builtins.currentTime' --eval
docker_push_image:
needs: [check_cachix, tests]
if: >-
github.event_name == 'push' &&
github.ref_name == 'master' &&
needs.check_cachix.outputs.secret == 'true'
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2.4.0
with:
fetch-depth: 0
- uses: cachix/install-nix-action@v16
- run: echo CACHIX_NAME="$(echo $GITHUB_REPOSITORY-install-tests | tr "[A-Z]/" "[a-z]-")" >> $GITHUB_ENV
- run: echo NIX_VERSION="$(nix-instantiate --eval -E '(import ./default.nix).defaultPackage.${builtins.currentSystem}.version' | tr -d \")" >> $GITHUB_ENV
- uses: cachix/cachix-action@v10
if: needs.check_cachix.outputs.secret == 'true'
with:
name: '${{ env.CACHIX_NAME }}'
signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
- run: nix --experimental-features 'nix-command flakes' build .#dockerImage -L
- run: docker load -i ./result/image.tar.gz
- run: docker tag nix:$NIX_VERSION nixos/nix:$NIX_VERSION
- run: docker tag nix:$NIX_VERSION nixos/nix:master
- name: Login to Docker Hub
uses: docker/login-action@v1
with:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}
- run: docker push nixos/nix:$NIX_VERSION
- run: docker push nixos/nix:master

4
.gitignore vendored
View file

@ -120,3 +120,7 @@ GTAGS
compile_commands.json
nix-rust/target
result
.vscode/

2
.version
View file

@ -1 +1 @@
2.6.0
2.7.0

1
Makefile.config.in
View file

@ -16,6 +16,7 @@ LDFLAGS = @LDFLAGS@
LIBARCHIVE_LIBS = @LIBARCHIVE_LIBS@
LIBBROTLI_LIBS = @LIBBROTLI_LIBS@
LIBCURL_LIBS = @LIBCURL_LIBS@
LOWDOWN_LIBS = @LOWDOWN_LIBS@
OPENSSL_LIBS = @OPENSSL_LIBS@
LIBSECCOMP_LIBS = @LIBSECCOMP_LIBS@
PACKAGE_NAME = @PACKAGE_NAME@

6
configure.ac
View file

@ -262,13 +262,17 @@ fi
PKG_CHECK_MODULES([GTEST], [gtest_main])
# Look for nlohmann/json.
PKG_CHECK_MODULES([NLOHMANN_JSON], [nlohmann_json >= 3.9])
# documentation generation switch
AC_ARG_ENABLE(doc-gen, AS_HELP_STRING([--disable-doc-gen],[disable documentation generation]),
doc_generate=$enableval, doc_generate=yes)
AC_SUBST(doc_generate)
# Look for lowdown library.
PKG_CHECK_MODULES([LOWDOWN], [lowdown >= 0.8.0], [CXXFLAGS="$LOWDOWN_CFLAGS $CXXFLAGS"])
PKG_CHECK_MODULES([LOWDOWN], [lowdown >= 0.9.0], [CXXFLAGS="$LOWDOWN_CFLAGS $CXXFLAGS"])
# Setuid installations.
AC_CHECK_FUNCS([setresuid setreuid lchown])

2
default.nix
View file

@ -1,3 +1,3 @@
(import (fetchTarball https://github.com/edolstra/flake-compat/archive/master.tar.gz) {
(import (fetchTarball "https://github.com/edolstra/flake-compat/archive/master.tar.gz") {
src = ./.;
}).defaultNix

1
doc/manual/src/SUMMARY.md.in
View file

@ -72,6 +72,7 @@
- [CLI guideline](contributing/cli-guideline.md)
- [Release Notes](release-notes/release-notes.md)
- [Release X.Y (202?-??-??)](release-notes/rl-next.md)
- [Release 2.6 (2022-01-24)](release-notes/rl-2.6.md)
- [Release 2.5 (2021-12-13)](release-notes/rl-2.5.md)
- [Release 2.4 (2021-11-01)](release-notes/rl-2.4.md)
- [Release 2.3 (2019-09-04)](release-notes/rl-2.3.md)

3
doc/manual/src/command-ref/nix-shell.md
View file

@ -101,7 +101,8 @@ The following common options are supported:
- `NIX_BUILD_SHELL`\
Shell used to start the interactive environment. Defaults to the
`bash` found in `PATH`.
`bash` found in `<nixpkgs>`, falling back to the `bash` found in
`PATH` if not found.
# Examples

4
doc/manual/src/expressions/language-constructs.md
View file

@ -284,6 +284,10 @@ The points of interest are:
function is called with the `localServer` argument set to `true` but
the `db4` argument set to `null`, then the evaluation fails.
Note that `->` is the [logical
implication](https://en.wikipedia.org/wiki/Truth_table#Logical_implication)
Boolean operation.
2. This is a more subtle condition: if Subversion is built with Apache
(`httpServer`) support, then the Expat library (an XML library) used
by Subversion should be same as the one used by Apache. This is

3
doc/manual/src/release-notes/rl-2.4.md
View file

@ -276,6 +276,9 @@ more than 2800 commits from 195 contributors since release 2.3.
* Plugins can now register `nix` subcommands.
* The `--indirect` flag to `nix-store --add-root` has become a no-op.
`--add-root` will always generate indirect GC roots from now on.
## Incompatible changes
* The `nix` command is now marked as an experimental feature. This

21
doc/manual/src/release-notes/rl-2.6.md Normal file
View file

@ -0,0 +1,21 @@
# Release 2.6 (2022-01-24)
* The Nix CLI now searches for a `flake.nix` up until the root of the current
Git repository or a filesystem boundary rather than just in the current
directory.
* The TOML parser used by `builtins.fromTOML` has been replaced by [a
more compliant one](https://github.com/ToruNiina/toml11).
* Added `:st`/`:show-trace` commands to `nix repl`, which are used to
set or toggle display of error traces.
* New builtin function `builtins.zipAttrsWith` with the same
functionality as `lib.zipAttrsWith` from Nixpkgs, but much more
efficient.
* New command `nix store copy-log` to copy build logs from one store
to another.
* The `commit-lockfile-summary` option can be set to a non-empty
string to override the commit summary used when commiting an updated
lockfile. This may be used in conjunction with the `nixConfig`
attribute in `flake.nix` to better conform to repository
conventions.
* `docker run -ti nixos/nix:master` will place you in the Docker
container with the latest version of Nix from the `master` branch.

11
doc/manual/src/release-notes/rl-next.md
View file

@ -1,6 +1,9 @@
# Release X.Y (202?-??-??)
* The TOML parser used by `builtins.fromTOML` has been replaced by [a
more compliant one](https://github.com/ToruNiina/toml11).
* Added `:st`/`:show-trace` commands to nix repl, which are used to
set or toggle display of error traces.
* `nix bundle` breaking API change now supports bundlers of the form
`bundler.<system>.<name>= derivation: another-derivation;`. This supports
additional functionality to inspect evaluation information during bundling. A
new [repository](https://github.com/NixOS/bundlers) has various bundlers
implemented.
* `nix store ping` now reports the version of the remote Nix daemon.

5
docker.nix
View file

@ -20,6 +20,8 @@ let
man
cacert.out
findutils
iana-etc
git
];
users = {
@ -199,6 +201,8 @@ let
mkdir $out/tmp
mkdir -p $out/var/tmp
mkdir -p $out/etc/nix
cat $nixConfContentsPath > $out/etc/nix/nix.conf
@ -234,6 +238,7 @@ pkgs.dockerTools.buildLayeredImageWithNixDb {
'';
fakeRootCommands = ''
chmod 1777 tmp
chmod 1777 var/tmp
'';
config = {

18
flake.lock
View file

@ -31,10 +31,26 @@
"type": "indirect"
}
},
"nixpkgs-regression": {
"locked": {
"lastModified": 1643052045,
"narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
"type": "github"
},
"original": {
"id": "nixpkgs",
"rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
"type": "indirect"
}
},
"root": {
"inputs": {
"lowdown-src": "lowdown-src",
"nixpkgs": "nixpkgs"
"nixpkgs": "nixpkgs",
"nixpkgs-regression": "nixpkgs-regression"
}
}
},

408
flake.nix
View file

@ -2,9 +2,10 @@
description = "The purely functional package manager";
inputs.nixpkgs.url = "nixpkgs/nixos-21.05-small";
inputs.nixpkgs-regression.url = "nixpkgs/215d4d0fd80ca5163643b03a33fde804a29cc1e2";
inputs.lowdown-src = { url = "github:kristapsdz/lowdown"; flake = false; };
outputs = { self, nixpkgs, lowdown-src }:
outputs = { self, nixpkgs, nixpkgs-regression, lowdown-src }:
let
@ -132,6 +133,7 @@
./boehmgc-coroutine-sp-fallback.diff
];
}))
nlohmann_json
];
perlDeps =
@ -140,8 +142,8 @@
];
};
installScriptFor = systems:
with nixpkgsFor.x86_64-linux;
installScriptFor = systems:
with nixpkgsFor.x86_64-linux;
runCommand "installer-script"
{ buildInputs = [ nix ];
}
@ -205,188 +207,204 @@
installCheckPhase = "make installcheck -j$NIX_BUILD_CORES -l$NIX_BUILD_CORES";
};
binaryTarball = buildPackages: nix: pkgs: let
inherit (pkgs) cacert;
installerClosureInfo = buildPackages.closureInfo { rootPaths = [ nix cacert ]; };
in
binaryTarball = buildPackages: nix: pkgs:
let
inherit (pkgs) cacert;
installerClosureInfo = buildPackages.closureInfo { rootPaths = [ nix cacert ]; };
in
buildPackages.runCommand "nix-binary-tarball-${version}"
{ #nativeBuildInputs = lib.optional (system != "aarch64-linux") shellcheck;
meta.description = "Distribution-independent Nix bootstrap binaries for ${pkgs.system}";
}
''
cp ${installerClosureInfo}/registration $TMPDIR/reginfo
cp ${./scripts/create-darwin-volume.sh} $TMPDIR/create-darwin-volume.sh
substitute ${./scripts/install-nix-from-closure.sh} $TMPDIR/install \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
buildPackages.runCommand "nix-binary-tarball-${version}"
{ #nativeBuildInputs = lib.optional (system != "aarch64-linux") shellcheck;
meta.description = "Distribution-independent Nix bootstrap binaries for ${pkgs.system}";
}
''
cp ${installerClosureInfo}/registration $TMPDIR/reginfo
cp ${./scripts/create-darwin-volume.sh} $TMPDIR/create-darwin-volume.sh
substitute ${./scripts/install-nix-from-closure.sh} $TMPDIR/install \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-darwin-multi-user.sh} $TMPDIR/install-darwin-multi-user.sh \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-systemd-multi-user.sh} $TMPDIR/install-systemd-multi-user.sh \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-multi-user.sh} $TMPDIR/install-multi-user \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-darwin-multi-user.sh} $TMPDIR/install-darwin-multi-user.sh \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-systemd-multi-user.sh} $TMPDIR/install-systemd-multi-user.sh \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
substitute ${./scripts/install-multi-user.sh} $TMPDIR/install-multi-user \
--subst-var-by nix ${nix} \
--subst-var-by cacert ${cacert}
if type -p shellcheck; then
# SC1090: Don't worry about not being able to find
# $nix/etc/profile.d/nix.sh
shellcheck --exclude SC1090 $TMPDIR/install
shellcheck $TMPDIR/create-darwin-volume.sh
shellcheck $TMPDIR/install-darwin-multi-user.sh
shellcheck $TMPDIR/install-systemd-multi-user.sh
if type -p shellcheck; then
# SC1090: Don't worry about not being able to find
# $nix/etc/profile.d/nix.sh
shellcheck --exclude SC1090 $TMPDIR/install
shellcheck $TMPDIR/create-darwin-volume.sh
shellcheck $TMPDIR/install-darwin-multi-user.sh
shellcheck $TMPDIR/install-systemd-multi-user.sh
# SC1091: Don't panic about not being able to source
# /etc/profile
# SC2002: Ignore "useless cat" "error", when loading
# .reginfo, as the cat is a much cleaner
# implementation, even though it is "useless"
# SC2116: Allow ROOT_HOME=$(echo ~root) for resolving
# root's home directory
shellcheck --external-sources \
--exclude SC1091,SC2002,SC2116 $TMPDIR/install-multi-user
fi
# SC1091: Don't panic about not being able to source
# /etc/profile
# SC2002: Ignore "useless cat" "error", when loading
# .reginfo, as the cat is a much cleaner
# implementation, even though it is "useless"
# SC2116: Allow ROOT_HOME=$(echo ~root) for resolving
# root's home directory
shellcheck --external-sources \
--exclude SC1091,SC2002,SC2116 $TMPDIR/install-multi-user
fi
chmod +x $TMPDIR/install
chmod +x $TMPDIR/create-darwin-volume.sh
chmod +x $TMPDIR/install-darwin-multi-user.sh
chmod +x $TMPDIR/install-systemd-multi-user.sh
chmod +x $TMPDIR/install-multi-user
dir=nix-${version}-${pkgs.system}
fn=$out/$dir.tar.xz
mkdir -p $out/nix-support
echo "file binary-dist $fn" >> $out/nix-support/hydra-build-products
tar cvfJ $fn \
--owner=0 --group=0 --mode=u+rw,uga+r \
--absolute-names \
--hard-dereference \
--transform "s,$TMPDIR/install,$dir/install," \
--transform "s,$TMPDIR/create-darwin-volume.sh,$dir/create-darwin-volume.sh," \
--transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
--transform "s,$NIX_STORE,$dir/store,S" \
$TMPDIR/install \
$TMPDIR/create-darwin-volume.sh \
$TMPDIR/install-darwin-multi-user.sh \
$TMPDIR/install-systemd-multi-user.sh \
$TMPDIR/install-multi-user \
$TMPDIR/reginfo \
$(cat ${installerClosureInfo}/store-paths)
'';
overlayFor = getStdenv: final: prev:
let currentStdenv = getStdenv final; in
{
nixStable = prev.nix;
# Forward from the previous stage as we don’t want it to pick the lowdown override
nixUnstable = prev.nixUnstable;
nix = with final; with commonDeps pkgs; currentStdenv.mkDerivation {
name = "nix-${version}";
inherit version;
src = self;
VERSION_SUFFIX = versionSuffix;
outputs = [ "out" "dev" "doc" ];
nativeBuildInputs = nativeBuildDeps;
buildInputs = buildDeps ++ awsDeps;
propagatedBuildInputs = propagatedDeps;
preConfigure =
''
# Copy libboost_context so we don't get all of Boost in our closure.
# https://github.com/NixOS/nixpkgs/issues/45462
mkdir -p $out/lib
cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
rm -f $out/lib/*.a
${lib.optionalString currentStdenv.isLinux ''
chmod u+w $out/lib/*.so.*
patchelf --set-rpath $out/lib:${currentStdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
''}
'';
configureFlags = configureFlags ++
[ "--sysconfdir=/etc" ];
enableParallelBuilding = true;
makeFlags = "profiledir=$(out)/etc/profile.d PRECOMPILE_HEADERS=1";
doCheck = true;
installFlags = "sysconfdir=$(out)/etc";
postInstall = ''
mkdir -p $doc/nix-support
echo "doc manual $doc/share/doc/nix/manual" >> $doc/nix-support/hydra-build-products
chmod +x $TMPDIR/install
chmod +x $TMPDIR/create-darwin-volume.sh
chmod +x $TMPDIR/install-darwin-multi-user.sh
chmod +x $TMPDIR/install-systemd-multi-user.sh
chmod +x $TMPDIR/install-multi-user
dir=nix-${version}-${pkgs.system}
fn=$out/$dir.tar.xz
mkdir -p $out/nix-support
echo "file binary-dist $fn" >> $out/nix-support/hydra-build-products
tar cvfJ $fn \
--owner=0 --group=0 --mode=u+rw,uga+r \
--absolute-names \
--hard-dereference \
--transform "s,$TMPDIR/install,$dir/install," \
--transform "s,$TMPDIR/create-darwin-volume.sh,$dir/create-darwin-volume.sh," \
--transform "s,$TMPDIR/reginfo,$dir/.reginfo," \
--transform "s,$NIX_STORE,$dir/store,S" \
$TMPDIR/install \
$TMPDIR/create-darwin-volume.sh \
$TMPDIR/install-darwin-multi-user.sh \
$TMPDIR/install-systemd-multi-user.sh \
$TMPDIR/install-multi-user \
$TMPDIR/reginfo \
$(cat ${installerClosureInfo}/store-paths)
'';
doInstallCheck = true;
installCheckFlags = "sysconfdir=$(out)/etc";
overlayFor = getStdenv: final: prev:
let currentStdenv = getStdenv final; in
{
nixStable = prev.nix;
separateDebugInfo = true;
# Forward from the previous stage as we don’t want it to pick the lowdown override
nixUnstable = prev.nixUnstable;
strictDeps = true;
passthru.perl-bindings = with final; currentStdenv.mkDerivation {
name = "nix-perl-${version}";
nix = with final; with commonDeps pkgs; currentStdenv.mkDerivation {
name = "nix-${version}";
inherit version;
src = self;
nativeBuildInputs =
[ buildPackages.autoconf-archive
buildPackages.autoreconfHook
buildPackages.pkg-config
];
VERSION_SUFFIX = versionSuffix;
buildInputs =
[ nix
curl
bzip2
xz
pkgs.perl
boost
]
++ lib.optional (currentStdenv.isLinux || currentStdenv.isDarwin) libsodium
++ lib.optional currentStdenv.isDarwin darwin.apple_sdk.frameworks.Security;
outputs = [ "out" "dev" "doc" ];
configureFlags = ''
--with-dbi=${perlPackages.DBI}/${pkgs.perl.libPrefix}
--with-dbd-sqlite=${perlPackages.DBDSQLite}/${pkgs.perl.libPrefix}
'';
nativeBuildInputs = nativeBuildDeps;
buildInputs = buildDeps ++ awsDeps;
propagatedBuildInputs = propagatedDeps;
disallowedReferences = [ boost ];
preConfigure =
''
# Copy libboost_context so we don't get all of Boost in our closure.
# https://github.com/NixOS/nixpkgs/issues/45462
mkdir -p $out/lib
cp -pd ${boost}/lib/{libboost_context*,libboost_thread*,libboost_system*} $out/lib
rm -f $out/lib/*.a
${lib.optionalString currentStdenv.isLinux ''
chmod u+w $out/lib/*.so.*
patchelf --set-rpath $out/lib:${currentStdenv.cc.cc.lib}/lib $out/lib/libboost_thread.so.*
''}
${lib.optionalString currentStdenv.isDarwin ''
for LIB in $out/lib/*.dylib; do
chmod u+w $LIB
install_name_tool -id $LIB $LIB
done
install_name_tool -change ${boost}/lib/libboost_system.dylib $out/lib/libboost_system.dylib $out/lib/libboost_thread.dylib
''}
'';
configureFlags = configureFlags ++
[ "--sysconfdir=/etc" ];
enableParallelBuilding = true;
postUnpack = "sourceRoot=$sourceRoot/perl";
makeFlags = "profiledir=$(out)/etc/profile.d PRECOMPILE_HEADERS=1";
doCheck = true;
installFlags = "sysconfdir=$(out)/etc";
postInstall = ''
mkdir -p $doc/nix-support
echo "doc manual $doc/share/doc/nix/manual" >> $doc/nix-support/hydra-build-products
${lib.optionalString currentStdenv.isDarwin ''
install_name_tool \
-change ${boost}/lib/libboost_context.dylib \
$out/lib/libboost_context.dylib \
$out/lib/libnixutil.dylib
''}
'';
doInstallCheck = true;
installCheckFlags = "sysconfdir=$(out)/etc";
separateDebugInfo = true;
strictDeps = true;
passthru.perl-bindings = with final; currentStdenv.mkDerivation {
name = "nix-perl-${version}";
src = self;
nativeBuildInputs =
[ buildPackages.autoconf-archive
buildPackages.autoreconfHook
buildPackages.pkg-config
];
buildInputs =
[ nix
curl
bzip2
xz
pkgs.perl
boost
]
++ lib.optional (currentStdenv.isLinux || currentStdenv.isDarwin) libsodium
++ lib.optional currentStdenv.isDarwin darwin.apple_sdk.frameworks.Security;
configureFlags = ''
--with-dbi=${perlPackages.DBI}/${pkgs.perl.libPrefix}
--with-dbd-sqlite=${perlPackages.DBDSQLite}/${pkgs.perl.libPrefix}
'';
enableParallelBuilding = true;
postUnpack = "sourceRoot=$sourceRoot/perl";
};
};
lowdown-nix = with final; currentStdenv.mkDerivation rec {
name = "lowdown-0.9.0";
src = lowdown-src;
outputs = [ "out" "bin" "dev" ];
nativeBuildInputs = [ buildPackages.which ];
configurePhase = ''
${if (currentStdenv.isDarwin && currentStdenv.isAarch64) then "echo \"HAVE_SANDBOX_INIT=false\" > configure.local" else ""}
./configure \
PREFIX=${placeholder "dev"} \
BINDIR=${placeholder "bin"}/bin
'';
};
};
lowdown-nix = with final; currentStdenv.mkDerivation rec {
name = "lowdown-0.9.0";
src = lowdown-src;
outputs = [ "out" "bin" "dev" ];
nativeBuildInputs = [ buildPackages.which ];
configurePhase = ''
${if (currentStdenv.isDarwin && currentStdenv.isAarch64) then "echo \"HAVE_SANDBOX_INIT=false\" > configure.local" else ""}
./configure \
PREFIX=${placeholder "dev"} \
BINDIR=${placeholder "bin"}/bin
'';
};
};
in {
# A Nixpkgs overlay that overrides the 'nix' and
@ -429,19 +447,7 @@
installerScriptForGHA = installScriptFor [ "x86_64-linux" "x86_64-darwin" "armv6l-linux" "armv7l-linux"];
# docker image with Nix inside
dockerImage = nixpkgs.lib.genAttrs linux64BitSystems (system:
let
pkgs = nixpkgsFor.${system};
image = import ./docker.nix { inherit pkgs; tag = version; };
in pkgs.runCommand "docker-image-tarball-${version}"
{ meta.description = "Docker image with Nix for ${system}";
}
''
mkdir -p $out/nix-support
image=$out/image.tar.gz
ln -s ${image} $image
echo "file binary-dist $image" >> $out/nix-support/hydra-build-products
'');
dockerImage = nixpkgs.lib.genAttrs linux64BitSystems (system: self.packages.${system}.dockerImage);
# Line coverage analysis.
coverage =
@ -503,29 +509,23 @@
inherit (self) overlay;
});
/*
# Check whether we can still evaluate all of Nixpkgs.
# Make sure that nix-env still produces the exact same result
# on a particular version of Nixpkgs.
tests.evalNixpkgs =
import (nixpkgs + "/pkgs/top-level/make-tarball.nix") {
# FIXME: fix pkgs/top-level/make-tarball.nix in NixOS to not require a revCount.
inherit nixpkgs;
pkgs = nixpkgsFor.x86_64-linux;
officialRelease = false;
};
# Check whether we can still evaluate NixOS.
tests.evalNixOS =
with nixpkgsFor.x86_64-linux;
runCommand "eval-nixos" { buildInputs = [ nix ]; }
''
export NIX_STATE_DIR=$TMPDIR
nix-instantiate ${nixpkgs}/nixos/release-combined.nix -A tested --dry-run \
--arg nixpkgs '{ outPath = ${nixpkgs}; revCount = 123; shortRev = "abcdefgh"; }'
touch $out
type -p nix-env
# Note: we're filtering out nixos-install-tools because https://github.com/NixOS/nixpkgs/pull/153594#issuecomment-1020530593.
time nix-env --store dummy:// -f ${nixpkgs-regression} -qaP --drv-path | sort | grep -v nixos-install-tools > packages
[[ $(sha1sum < packages | cut -c1-40) = ff451c521e61e4fe72bdbe2d0ca5d1809affa733 ]]
mkdir $out
'';
*/
metrics.nixpkgs = import "${nixpkgs-regression}/pkgs/top-level/metrics.nix" {
pkgs = nixpkgsFor.x86_64-linux;
nixpkgs = nixpkgs-regression;
};
installTests = forAllSystems (system:
let pkgs = nixpkgsFor.${system}; in
@ -547,9 +547,9 @@
binaryTarball = self.hydraJobs.binaryTarball.${system};
perlBindings = self.hydraJobs.perlBindings.${system};
installTests = self.hydraJobs.installTests.${system};
} // (if system == "x86_64-linux" then {
} // (nixpkgs.lib.optionalAttrs (builtins.elem system linux64BitSystems)) {
dockerImage = self.hydraJobs.dockerImage.${system};
} else {}));
});
packages = forAllSystems (system: {
inherit (nixpkgsFor.${system}) nix;
@ -594,6 +594,20 @@
hardeningDisable = [ "pie" ];
};
dockerImage =
let
pkgs = nixpkgsFor.${system};
image = import ./docker.nix { inherit pkgs; tag = version; };
in
pkgs.runCommand
"docker-image-tarball-${version}"
{ meta.description = "Docker image with Nix for ${system}"; }
''
mkdir -p $out/nix-support
image=$out/image.tar.gz
ln -s ${image} $image
echo "file binary-dist $image" >> $out/nix-support/hydra-build-products
'';
} // builtins.listToAttrs (map (crossSystem: {
name = "nix-${crossSystem}";
value = let

399
nix-rust/Cargo.lock generated
View file

@ -1,399 +0,0 @@
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"checksum rand_pcg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "abf9b09b01790cfe0364f52bf32995ea3c39f4d2dd011eac241d2914146d0b44"
"checksum rand_xorshift 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cbf7e9e623549b0e21f6e97cf8ecf247c1a8fd2e8a992ae265314300b2455d5c"
"checksum rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "678054eb77286b51581ba43620cc911abf02758c91f93f479767aed0f90458b2"
"checksum redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)" = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
"checksum regex-syntax 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "11a7e20d1cce64ef2fed88b66d347f88bd9babb82845b2b858f3edbf59a4f716"
"checksum remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4a83fa3702a688b9359eccba92d153ac33fd2e8462f9e0e3fdf155239ea7792e"
"checksum rusty-fork 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3dd93264e10c577503e926bd1430193eeb5d21b059148910082245309b424fae"
"checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
"checksum wait-timeout 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
"checksum wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b89c3ce4ce14bdc6fb6beaf9ec7928ca331de5df7e5ea278375642a2f478570d"
"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

23
nix-rust/Cargo.toml
View file

@ -1,23 +0,0 @@
[package]
name = "nix-rust"
version = "0.1.0"
authors = ["Eelco Dolstra <edolstra@gmail.com>"]
edition = "2018"
[lib]
name = "nixrust"
crate-type = ["cdylib"]
[dependencies]
libc = "0.2"
#futures-preview = { version = "=0.3.0-alpha.19" }
#hyper = "0.13.0-alpha.4"
#http = "0.1"
#tokio = { version = "0.2.0-alpha.6", default-features = false, features = ["rt-full"] }
lazy_static = "1.4"
#byteorder = "1.3"
[dev-dependencies]
hex = "0.3"
assert_matches = "1.3"
proptest = "0.9"

48
nix-rust/local.mk
View file

@ -1,48 +0,0 @@
ifeq ($(OPTIMIZE), 1)
RUST_MODE = --release
RUST_DIR = release
else
RUST_MODE =
RUST_DIR = debug
endif
libnixrust_PATH := $(d)/target/$(RUST_DIR)/libnixrust.$(SO_EXT)
libnixrust_INSTALL_PATH := $(libdir)/libnixrust.$(SO_EXT)
libnixrust_LDFLAGS_USE := -L$(d)/target/$(RUST_DIR) -lnixrust
libnixrust_LDFLAGS_USE_INSTALLED := -L$(libdir) -lnixrust
ifdef HOST_LINUX
libnixrust_LDFLAGS_USE += -ldl
libnixrust_LDFLAGS_USE_INSTALLED += -ldl
endif
ifdef HOST_DARWIN
libnixrust_BUILD_FLAGS = NIX_LDFLAGS="-undefined dynamic_lookup"
else
libnixrust_LDFLAGS_USE += -Wl,-rpath,$(abspath $(d)/target/$(RUST_DIR))
libnixrust_LDFLAGS_USE_INSTALLED += -Wl,-rpath,$(libdir)
endif
$(libnixrust_PATH): $(call rwildcard, $(d)/src, *.rs) $(d)/Cargo.toml
$(trace-gen) cd nix-rust && CARGO_HOME=$$(if [[ -d vendor ]]; then echo vendor; fi) \
$(libnixrust_BUILD_FLAGS) \
cargo build $(RUST_MODE) $$(if [[ -d vendor ]]; then echo --offline; fi) \
&& touch target/$(RUST_DIR)/libnixrust.$(SO_EXT)
$(libnixrust_INSTALL_PATH): $(libnixrust_PATH)
$(target-gen) cp $^ $@
ifdef HOST_DARWIN
install_name_tool -id $@ $@
endif
clean: clean-rust
clean-rust:
$(suppress) rm -rfv nix-rust/target
ifndef HOST_DARWIN
check: rust-tests
rust-tests:
$(trace-test) cd nix-rust && CARGO_HOME=$$(if [[ -d vendor ]]; then echo vendor; fi) cargo test --release $$(if [[ -d vendor ]]; then echo --offline; fi)
endif

77
nix-rust/src/c.rs
View file

@ -1,77 +0,0 @@
use super::{error, store::path, store::StorePath, util};
#[no_mangle]
pub unsafe extern "C" fn ffi_String_new(s: &str, out: *mut String) {
// FIXME: check whether 's' is valid UTF-8?
out.write(s.to_string())
}
#[no_mangle]
pub unsafe extern "C" fn ffi_String_drop(self_: *mut String) {
std::ptr::drop_in_place(self_);
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_new(
path: &str,
store_dir: &str,
) -> Result<StorePath, error::CppException> {
StorePath::new(std::path::Path::new(path), std::path::Path::new(store_dir))
.map_err(|err| err.into())
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_new2(
hash: &[u8; crate::store::path::STORE_PATH_HASH_BYTES],
name: &str,
) -> Result<StorePath, error::CppException> {
StorePath::from_parts(*hash, name).map_err(|err| err.into())
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_fromBaseName(
base_name: &str,
) -> Result<StorePath, error::CppException> {
StorePath::new_from_base_name(base_name).map_err(|err| err.into())
}
#[no_mangle]
pub unsafe extern "C" fn ffi_StorePath_drop(self_: *mut StorePath) {
std::ptr::drop_in_place(self_);
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_to_string(self_: &StorePath) -> Vec<u8> {
let mut buf = vec![0; path::STORE_PATH_HASH_CHARS + 1 + self_.name.name().len()];
util::base32::encode_into(self_.hash.hash(), &mut buf[0..path::STORE_PATH_HASH_CHARS]);
buf[path::STORE_PATH_HASH_CHARS] = b'-';
buf[path::STORE_PATH_HASH_CHARS + 1..].clone_from_slice(self_.name.name().as_bytes());
buf
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_less_than(a: &StorePath, b: &StorePath) -> bool {
a < b
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_eq(a: &StorePath, b: &StorePath) -> bool {
a == b
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_clone(self_: &StorePath) -> StorePath {
self_.clone()
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_name(self_: &StorePath) -> &str {
self_.name.name()
}
#[no_mangle]
pub extern "C" fn ffi_StorePath_hash_data(
self_: &StorePath,
) -> &[u8; crate::store::path::STORE_PATH_HASH_BYTES] {
self_.hash.hash()
}

118
nix-rust/src/error.rs
View file

@ -1,118 +0,0 @@
use std::fmt;
#[derive(Debug)]
pub enum Error {
InvalidPath(crate::store::StorePath),
BadStorePath(std::path::PathBuf),
NotInStore(std::path::PathBuf),
BadNarInfo,
BadBase32,
StorePathNameEmpty,
StorePathNameTooLong,
BadStorePathName,
NarSizeFieldTooBig,
BadNarString,
BadNarPadding,
BadNarVersionMagic,
MissingNarOpenTag,
MissingNarCloseTag,
MissingNarField,
BadNarField(String),
BadExecutableField,
IOError(std::io::Error),
#[cfg(unused)]
HttpError(hyper::error::Error),
Misc(String),
#[cfg(not(test))]
Foreign(CppException),
BadTarFileMemberName(String),
}
impl From<std::io::Error> for Error {
fn from(err: std::io::Error) -> Self {
Error::IOError(err)
}
}
#[cfg(unused)]
impl From<hyper::error::Error> for Error {
fn from(err: hyper::error::Error) -> Self {
Error::HttpError(err)
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::InvalidPath(_) => write!(f, "invalid path"),
Error::BadNarInfo => write!(f, ".narinfo file is corrupt"),
Error::BadStorePath(path) => write!(f, "path '{}' is not a store path", path.display()),
Error::NotInStore(path) => {
write!(f, "path '{}' is not in the Nix store", path.display())
}
Error::BadBase32 => write!(f, "invalid base32 string"),
Error::StorePathNameEmpty => write!(f, "store path name is empty"),
Error::StorePathNameTooLong => {
write!(f, "store path name is longer than 211 characters")
}
Error::BadStorePathName => write!(f, "store path name contains forbidden character"),
Error::NarSizeFieldTooBig => write!(f, "size field in NAR is too big"),
Error::BadNarString => write!(f, "NAR string is not valid UTF-8"),
Error::BadNarPadding => write!(f, "NAR padding is not zero"),
Error::BadNarVersionMagic => write!(f, "unsupported NAR version"),
Error::MissingNarOpenTag => write!(f, "NAR open tag is missing"),
Error::MissingNarCloseTag => write!(f, "NAR close tag is missing"),
Error::MissingNarField => write!(f, "expected NAR field is missing"),
Error::BadNarField(s) => write!(f, "unrecognized NAR field '{}'", s),
Error::BadExecutableField => write!(f, "bad 'executable' field in NAR"),
Error::IOError(err) => write!(f, "I/O error: {}", err),
#[cfg(unused)]
Error::HttpError(err) => write!(f, "HTTP error: {}", err),
#[cfg(not(test))]
Error::Foreign(_) => write!(f, "<C++ exception>"), // FIXME
Error::Misc(s) => write!(f, "{}", s),
Error::BadTarFileMemberName(s) => {
write!(f, "tar archive contains illegal file name '{}'", s)
}
}
}
}
#[cfg(not(test))]
impl From<Error> for CppException {
fn from(err: Error) -> Self {
match err {
Error::Foreign(ex) => ex,
_ => CppException::new(&err.to_string()),
}
}
}
#[cfg(not(test))]
#[repr(C)]
#[derive(Debug)]
pub struct CppException(*const libc::c_void); // == std::exception_ptr*
#[cfg(not(test))]
impl CppException {
fn new(s: &str) -> Self {
Self(unsafe { make_error(s) })
}
}
#[cfg(not(test))]
impl Drop for CppException {
fn drop(&mut self) {
unsafe {
destroy_error(self.0);
}
}
}
#[cfg(not(test))]
extern "C" {
#[allow(improper_ctypes)] // YOLO
fn make_error(s: &str) -> *const libc::c_void;
fn destroy_error(exc: *const libc::c_void);
}

10
nix-rust/src/lib.rs
View file

@ -1,10 +0,0 @@
#[allow(improper_ctypes_definitions)]
#[cfg(not(test))]
mod c;
mod error;
#[cfg(unused)]
mod nar;
mod store;
mod util;
pub use error::Error;

126
nix-rust/src/nar.rs
View file

@ -1,126 +0,0 @@
use crate::Error;
use byteorder::{LittleEndian, ReadBytesExt};
use std::convert::TryFrom;
use std::io::Read;
pub fn parse<R: Read>(input: &mut R) -> Result<(), Error> {
if String::read(input)? != NAR_VERSION_MAGIC {
return Err(Error::BadNarVersionMagic);
}
parse_file(input)
}
const NAR_VERSION_MAGIC: &str = "nix-archive-1";
fn parse_file<R: Read>(input: &mut R) -> Result<(), Error> {
if String::read(input)? != "(" {
return Err(Error::MissingNarOpenTag);
}
if String::read(input)? != "type" {
return Err(Error::MissingNarField);
}
match String::read(input)?.as_ref() {
"regular" => {
let mut _executable = false;
let mut tag = String::read(input)?;
if tag == "executable" {
_executable = true;
if String::read(input)? != "" {
return Err(Error::BadExecutableField);
}
tag = String::read(input)?;
}
if tag != "contents" {
return Err(Error::MissingNarField);
}
let _contents = Vec::<u8>::read(input)?;
if String::read(input)? != ")" {
return Err(Error::MissingNarCloseTag);
}
}
"directory" => loop {
match String::read(input)?.as_ref() {
"entry" => {
if String::read(input)? != "(" {
return Err(Error::MissingNarOpenTag);
}
if String::read(input)? != "name" {
return Err(Error::MissingNarField);
}
let _name = String::read(input)?;
if String::read(input)? != "node" {
return Err(Error::MissingNarField);
}
parse_file(input)?;
let tag = String::read(input)?;
if tag != ")" {
return Err(Error::MissingNarCloseTag);
}
}
")" => break,
s => return Err(Error::BadNarField(s.into())),
}
},
"symlink" => {
if String::read(input)? != "target" {
return Err(Error::MissingNarField);
}
let _target = String::read(input)?;
if String::read(input)? != ")" {
return Err(Error::MissingNarCloseTag);
}
}
s => return Err(Error::BadNarField(s.into())),
}
Ok(())
}
trait Deserialize: Sized {
fn read<R: Read>(input: &mut R) -> Result<Self, Error>;
}
impl Deserialize for String {
fn read<R: Read>(input: &mut R) -> Result<Self, Error> {
let buf = Deserialize::read(input)?;
Ok(String::from_utf8(buf).map_err(|_| Error::BadNarString)?)
}
}
impl Deserialize for Vec<u8> {
fn read<R: Read>(input: &mut R) -> Result<Self, Error> {
let n: usize = Deserialize::read(input)?;
let mut buf = vec![0; n];
input.read_exact(&mut buf)?;
skip_padding(input, n)?;
Ok(buf)
}
}
fn skip_padding<R: Read>(input: &mut R, len: usize) -> Result<(), Error> {
if len % 8 != 0 {
let mut buf = [0; 8];
let buf = &mut buf[0..8 - (len % 8)];
input.read_exact(buf)?;
if !buf.iter().all(|b| *b == 0) {
return Err(Error::BadNarPadding);
}
}
Ok(())
}
impl Deserialize for u64 {
fn read<R: Read>(input: &mut R) -> Result<Self, Error> {
Ok(input.read_u64::<LittleEndian>()?)
}
}
impl Deserialize for usize {
fn read<R: Read>(input: &mut R) -> Result<Self, Error> {
let n: u64 = Deserialize::read(input)?;
Ok(usize::try_from(n).map_err(|_| Error::NarSizeFieldTooBig)?)
}
}

48
nix-rust/src/store/binary_cache_store.rs
View file

@ -1,48 +0,0 @@
use super::{PathInfo, Store, StorePath};
use crate::Error;
use hyper::client::Client;
pub struct BinaryCacheStore {
base_uri: String,
client: Client<hyper::client::HttpConnector, hyper::Body>,
}
impl BinaryCacheStore {
pub fn new(base_uri: String) -> Self {
Self {
base_uri,
client: Client::new(),
}
}
}
impl Store for BinaryCacheStore {
fn query_path_info(
&self,
path: &StorePath,
) -> std::pin::Pin<Box<dyn std::future::Future<Output = Result<PathInfo, Error>> + Send>> {
let uri = format!("{}/{}.narinfo", self.base_uri.clone(), path.hash);
let path = path.clone();
let client = self.client.clone();
let store_dir = self.store_dir().to_string();
Box::pin(async move {
let response = client.get(uri.parse::<hyper::Uri>().unwrap()).await?;
if response.status() == hyper::StatusCode::NOT_FOUND
|| response.status() == hyper::StatusCode::FORBIDDEN
{
return Err(Error::InvalidPath(path));
}
let mut body = response.into_body();
let mut bytes = Vec::new();
while let Some(next) = body.next().await {
bytes.extend(next?);
}
PathInfo::parse_nar_info(std::str::from_utf8(&bytes).unwrap(), &store_dir)
})
}
}

17
nix-rust/src/store/mod.rs
View file

@ -1,17 +0,0 @@
pub mod path;
#[cfg(unused)]
mod binary_cache_store;
#[cfg(unused)]
mod path_info;
#[cfg(unused)]
mod store;
pub use path::{StorePath, StorePathHash, StorePathName};
#[cfg(unused)]
pub use binary_cache_store::BinaryCacheStore;
#[cfg(unused)]
pub use path_info::PathInfo;
#[cfg(unused)]
pub use store::Store;

224
nix-rust/src/store/path.rs
View file

@ -1,224 +0,0 @@
use crate::error::Error;
use crate::util::base32;
use std::fmt;
use std::path::Path;
#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
pub struct StorePath {
pub hash: StorePathHash,
pub name: StorePathName,
}
pub const STORE_PATH_HASH_BYTES: usize = 20;
pub const STORE_PATH_HASH_CHARS: usize = 32;
impl StorePath {
pub fn new(path: &Path, store_dir: &Path) -> Result<Self, Error> {
if path.parent() != Some(store_dir) {
return Err(Error::NotInStore(path.into()));
}
Self::new_from_base_name(
path.file_name()
.ok_or_else(|| Error::BadStorePath(path.into()))?
.to_str()
.ok_or_else(|| Error::BadStorePath(path.into()))?,
)
}
pub fn from_parts(hash: [u8; STORE_PATH_HASH_BYTES], name: &str) -> Result<Self, Error> {
Ok(StorePath {
hash: StorePathHash(hash),
name: StorePathName::new(name)?,
})
}
pub fn new_from_base_name(base_name: &str) -> Result<Self, Error> {
if base_name.len() < STORE_PATH_HASH_CHARS + 1
|| base_name.as_bytes()[STORE_PATH_HASH_CHARS] != b'-'
{
return Err(Error::BadStorePath(base_name.into()));
}
Ok(StorePath {
hash: StorePathHash::new(&base_name[0..STORE_PATH_HASH_CHARS])?,
name: StorePathName::new(&base_name[STORE_PATH_HASH_CHARS + 1..])?,
})
}
}
impl fmt::Display for StorePath {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{}-{}", self.hash, self.name)
}
}
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct StorePathHash([u8; STORE_PATH_HASH_BYTES]);
impl StorePathHash {
pub fn new(s: &str) -> Result<Self, Error> {
assert_eq!(s.len(), STORE_PATH_HASH_CHARS);
let v = base32::decode(s)?;
assert_eq!(v.len(), STORE_PATH_HASH_BYTES);
let mut bytes: [u8; 20] = Default::default();
bytes.copy_from_slice(&v[0..STORE_PATH_HASH_BYTES]);
Ok(Self(bytes))
}
pub fn hash(&self) -> &[u8; STORE_PATH_HASH_BYTES] {
&self.0
}
}
impl fmt::Display for StorePathHash {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let mut buf = vec![0; STORE_PATH_HASH_CHARS];
base32::encode_into(&self.0, &mut buf);
f.write_str(std::str::from_utf8(&buf).unwrap())
}
}
impl Ord for StorePathHash {
fn cmp(&self, other: &Self) -> std::cmp::Ordering {
// Historically we've sorted store paths by their base32
// serialization, but our base32 encodes bytes in reverse
// order. So compare them in reverse order as well.
self.0.iter().rev().cmp(other.0.iter().rev())
}
}
impl PartialOrd for StorePathHash {
fn partial_cmp(&self, other: &Self) -> Option<std::cmp::Ordering> {
Some(self.cmp(other))
}
}
#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Debug)]
pub struct StorePathName(String);
impl StorePathName {
pub fn new(s: &str) -> Result<Self, Error> {
if s.is_empty() {
return Err(Error::StorePathNameEmpty);
}
if s.len() > 211 {
return Err(Error::StorePathNameTooLong);
}
let is_good_path_name = s.chars().all(|c| {
c.is_ascii_alphabetic()
|| c.is_ascii_digit()
|| c == '+'
|| c == '-'
|| c == '.'
|| c == '_'
|| c == '?'
|| c == '='
});
if s.starts_with('.') || !is_good_path_name {
return Err(Error::BadStorePathName);
}
Ok(Self(s.to_string()))
}
pub fn name(&self) -> &str {
&self.0
}
}
impl fmt::Display for StorePathName {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str(&self.0)
}
}
#[cfg(test)]
mod tests {
use super::*;
use assert_matches::assert_matches;
#[test]
fn test_parse() {
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxlz-konsole-18.12.3";
let p = StorePath::new_from_base_name(&s).unwrap();
assert_eq!(p.name.0, "konsole-18.12.3");
assert_eq!(
p.hash.0,
[
0x9f, 0x76, 0x49, 0x20, 0xf6, 0x5d, 0xe9, 0x71, 0xc4, 0xca, 0x46, 0x21, 0xab, 0xff,
0x9b, 0x44, 0xef, 0x87, 0x0f, 0x3c
]
);
}
#[test]
fn test_no_name() {
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxlz-";
assert_matches!(
StorePath::new_from_base_name(&s),
Err(Error::StorePathNameEmpty)
);
}
#[test]
fn test_no_dash() {
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxlz";
assert_matches!(
StorePath::new_from_base_name(&s),
Err(Error::BadStorePath(_))
);
}
#[test]
fn test_short_hash() {
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxl-konsole-18.12.3";
assert_matches!(
StorePath::new_from_base_name(&s),
Err(Error::BadStorePath(_))
);
}
#[test]
fn test_invalid_hash() {
let s = "7h7qgvs4kgzsn8e6rb273saxyqh4jxlz-konsole-18.12.3";
assert_matches!(StorePath::new_from_base_name(&s), Err(Error::BadBase32));
}
#[test]
fn test_long_name() {
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxlz-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
assert_matches!(StorePath::new_from_base_name(&s), Ok(_));
}
#[test]
fn test_too_long_name() {
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxlz-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
assert_matches!(
StorePath::new_from_base_name(&s),
Err(Error::StorePathNameTooLong)
);
}
#[test]
fn test_bad_name() {
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxlz-foo bar";
assert_matches!(
StorePath::new_from_base_name(&s),
Err(Error::BadStorePathName)
);
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxlz-kónsole";
assert_matches!(
StorePath::new_from_base_name(&s),
Err(Error::BadStorePathName)
);
}
#[test]
fn test_roundtrip() {
let s = "7h7qgvs4kgzsn8a6rb273saxyqh4jxlz-konsole-18.12.3";
assert_eq!(StorePath::new_from_base_name(&s).unwrap().to_string(), s);
}
}

70
nix-rust/src/store/path_info.rs
View file

@ -1,70 +0,0 @@
use crate::store::StorePath;
use crate::Error;
use std::collections::BTreeSet;
#[derive(Clone, Debug)]
pub struct PathInfo {
pub path: StorePath,
pub references: BTreeSet<StorePath>,
pub nar_size: u64,
pub deriver: Option<StorePath>,
// Additional binary cache info.
pub url: Option<String>,
pub compression: Option<String>,
pub file_size: Option<u64>,
}
impl PathInfo {
pub fn parse_nar_info(nar_info: &str, store_dir: &str) -> Result<Self, Error> {
let mut path = None;
let mut references = BTreeSet::new();
let mut nar_size = None;
let mut deriver = None;
let mut url = None;
let mut compression = None;
let mut file_size = None;
for line in nar_info.lines() {
let colon = line.find(':').ok_or(Error::BadNarInfo)?;
let (name, value) = line.split_at(colon);
if !value.starts_with(": ") {
return Err(Error::BadNarInfo);
}
let value = &value[2..];
if name == "StorePath" {
path = Some(StorePath::new(std::path::Path::new(value), store_dir)?);
} else if name == "NarSize" {
nar_size = Some(u64::from_str_radix(value, 10).map_err(|_| Error::BadNarInfo)?);
} else if name == "References" {
if !value.is_empty() {
for r in value.split(' ') {
references.insert(StorePath::new_from_base_name(r)?);
}
}
} else if name == "Deriver" {
deriver = Some(StorePath::new_from_base_name(value)?);
} else if name == "URL" {
url = Some(value.into());
} else if name == "Compression" {
compression = Some(value.into());
} else if name == "FileSize" {
file_size = Some(u64::from_str_radix(value, 10).map_err(|_| Error::BadNarInfo)?);
}
}
Ok(PathInfo {
path: path.ok_or(Error::BadNarInfo)?,
references,
nar_size: nar_size.ok_or(Error::BadNarInfo)?,
deriver,
url: Some(url.ok_or(Error::BadNarInfo)?),
compression,
file_size,
})
}
}

53
nix-rust/src/store/store.rs
View file

@ -1,53 +0,0 @@
use super::{PathInfo, StorePath};
use crate::Error;
use std::collections::{BTreeMap, BTreeSet};
use std::path::Path;
pub trait Store: Send + Sync {
fn store_dir(&self) -> &str {
"/nix/store"
}
fn query_path_info(
&self,
store_path: &StorePath,
) -> std::pin::Pin<Box<dyn std::future::Future<Output = Result<PathInfo, Error>> + Send>>;
}
impl dyn Store {
pub fn parse_store_path(&self, path: &Path) -> Result<StorePath, Error> {
StorePath::new(path, self.store_dir())
}
pub async fn compute_path_closure(
&self,
roots: BTreeSet<StorePath>,
) -> Result<BTreeMap<StorePath, PathInfo>, Error> {
let mut done = BTreeSet::new();
let mut result = BTreeMap::new();
let mut pending = vec![];
for root in roots {
pending.push(self.query_path_info(&root));
done.insert(root);
}
while !pending.is_empty() {
let (info, _, remaining) = futures::future::select_all(pending).await;
pending = remaining;
let info = info?;
for path in &info.references {
if !done.contains(path) {
pending.push(self.query_path_info(&path));
done.insert(path.clone());
}
}
result.insert(info.path.clone(), info);
}
Ok(result)
}
}

160
nix-rust/src/util/base32.rs
View file

@ -1,160 +0,0 @@
use crate::error::Error;
use lazy_static::lazy_static;
pub fn encoded_len(input_len: usize) -> usize {
if input_len == 0 {
0
} else {
(input_len * 8 - 1) / 5 + 1
}
}
pub fn decoded_len(input_len: usize) -> usize {
input_len * 5 / 8
}
static BASE32_CHARS: &[u8; 32] = &b"0123456789abcdfghijklmnpqrsvwxyz";
lazy_static! {
static ref BASE32_CHARS_REVERSE: Box<[u8; 256]> = {
let mut xs = [0xffu8; 256];
for (n, c) in BASE32_CHARS.iter().enumerate() {
xs[*c as usize] = n as u8;
}
Box::new(xs)
};
}
pub fn encode(input: &[u8]) -> String {
let mut buf = vec![0; encoded_len(input.len())];
encode_into(input, &mut buf);
std::str::from_utf8(&buf).unwrap().to_string()
}
pub fn encode_into(input: &[u8], output: &mut [u8]) {
let len = encoded_len(input.len());
assert_eq!(len, output.len());
let mut nr_bits_left: usize = 0;
let mut bits_left: u16 = 0;
let mut pos = len;
for b in input {
bits_left |= (*b as u16) << nr_bits_left;
nr_bits_left += 8;
while nr_bits_left > 5 {
output[pos - 1] = BASE32_CHARS[(bits_left & 0x1f) as usize];
pos -= 1;
bits_left >>= 5;
nr_bits_left -= 5;
}
}
if nr_bits_left > 0 {
output[pos - 1] = BASE32_CHARS[(bits_left & 0x1f) as usize];
pos -= 1;
}
assert_eq!(pos, 0);
}
pub fn decode(input: &str) -> Result<Vec<u8>, crate::Error> {
let mut res = Vec::with_capacity(decoded_len(input.len()));
let mut nr_bits_left: usize = 0;
let mut bits_left: u16 = 0;
for c in input.chars().rev() {
let b = BASE32_CHARS_REVERSE[c as usize];
if b == 0xff {
return Err(Error::BadBase32);
}
bits_left |= (b as u16) << nr_bits_left;
nr_bits_left += 5;
if nr_bits_left >= 8 {
res.push((bits_left & 0xff) as u8);
bits_left >>= 8;
nr_bits_left -= 8;
}
}
if nr_bits_left > 0 && bits_left != 0 {
return Err(Error::BadBase32);
}
Ok(res)
}
#[cfg(test)]
mod tests {
use super::*;
use assert_matches::assert_matches;
use hex;
use proptest::proptest;
#[test]
fn test_encode() {
assert_eq!(encode(&[]), "");
assert_eq!(
encode(&hex::decode("0839703786356bca59b0f4a32987eb2e6de43ae8").unwrap()),
"x0xf8v9fxf3jk8zln1cwlsrmhqvp0f88"
);
assert_eq!(
encode(
&hex::decode("ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad")
.unwrap()
),
"1b8m03r63zqhnjf7l5wnldhh7c134ap5vpj0850ymkq1iyzicy5s"
);
assert_eq!(
encode(
&hex::decode("ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f")
.unwrap()
),
"2gs8k559z4rlahfx0y688s49m2vvszylcikrfinm30ly9rak69236nkam5ydvly1ai7xac99vxfc4ii84hawjbk876blyk1jfhkbbyx"
);
}
#[test]
fn test_decode() {
assert_eq!(hex::encode(decode("").unwrap()), "");
assert_eq!(
hex::encode(decode("x0xf8v9fxf3jk8zln1cwlsrmhqvp0f88").unwrap()),
"0839703786356bca59b0f4a32987eb2e6de43ae8"
);
assert_eq!(
hex::encode(decode("1b8m03r63zqhnjf7l5wnldhh7c134ap5vpj0850ymkq1iyzicy5s").unwrap()),
"ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
);
assert_eq!(
hex::encode(decode("2gs8k559z4rlahfx0y688s49m2vvszylcikrfinm30ly9rak69236nkam5ydvly1ai7xac99vxfc4ii84hawjbk876blyk1jfhkbbyx").unwrap()),
"ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f"
);
assert_matches!(
decode("xoxf8v9fxf3jk8zln1cwlsrmhqvp0f88"),
Err(Error::BadBase32)
);
assert_matches!(
decode("2b8m03r63zqhnjf7l5wnldhh7c134ap5vpj0850ymkq1iyzicy5s"),
Err(Error::BadBase32)
);
assert_matches!(decode("2"), Err(Error::BadBase32));
assert_matches!(decode("2gs"), Err(Error::BadBase32));
assert_matches!(decode("2gs8"), Err(Error::BadBase32));
}
proptest! {
#[test]
fn roundtrip(s: Vec<u8>) {
assert_eq!(s, decode(&encode(&s)).unwrap());
}
}
}

1
nix-rust/src/util/mod.rs
View file

@ -1 +0,0 @@
pub mod base32;

25
scripts/install-multi-user.sh
View file

@ -576,18 +576,37 @@ create_directories() {
# since this bit is cross-platform:
# - first try with `command -vp` to try and find
# chown in the usual places
# * to work around some sort of deficiency in
# `command -p` in macOS bash 3.2, we also add
# PATH="$(getconf PATH 2>/dev/null)". As long as
# getconf is found, this should set a sane PATH
# which `command -p` in bash 3.2 appears to use.
# A bash with a properly-working `command -p`
# should ignore this hard-set PATH in favor of
# whatever it obtains internally. See
# github.com/NixOS/nix/issues/5768
# - fall back on `command -v` which would find
# any chown on path
# if we don't find one, the command is already
# hiding behind || true, and the general state
# should be one the user can repair once they
# figure out where chown is...
local get_chr_own="$(command -vp chown)"
local get_chr_own="$(PATH="$(getconf PATH 2>/dev/null)" command -vp chown)"
if [[ -z "$get_chr_own" ]]; then
get_chr_own="$(command -v chown)"
fi
_sudo "to take root ownership of existing Nix store files" \
"$get_chr_own" -R "root:$NIX_BUILD_GROUP_NAME" "$NIX_ROOT" || true
if [[ -z "$get_chr_own" ]]; then
reminder <<EOF
I wanted to take root ownership of existing Nix store files,
but I couldn't locate 'chown'. (You may need to fix your PATH.)
To manually change file ownership, you can run:
sudo chown -R 'root:$NIX_BUILD_GROUP_NAME' '$NIX_ROOT'
EOF
else
_sudo "to take root ownership of existing Nix store files" \
"$get_chr_own" -R "root:$NIX_BUILD_GROUP_NAME" "$NIX_ROOT" || true
fi
fi
_sudo "to make the basic directory structure of Nix (part 1)" \
install -dv -m 0755 /nix /nix/var /nix/var/log /nix/var/log/nix /nix/var/log/nix/drvs /nix/var/nix{,/db,/gcroots,/profiles,/temproots,/userpool} /nix/var/nix/{gcroots,profiles}/per-user

2
shell.nix
View file

@ -1,3 +1,3 @@
(import (fetchTarball https://github.com/edolstra/flake-compat/archive/master.tar.gz) {
(import (fetchTarball "https://github.com/edolstra/flake-compat/archive/master.tar.gz") {
src = ./.;
}).shellNix

68
src/libcmd/command.cc
View file

@ -54,6 +54,36 @@ void StoreCommand::run()
run(getStore());
}
CopyCommand::CopyCommand()
{
addFlag({
.longName = "from",
.description = "URL of the source Nix store.",
.labels = {"store-uri"},
.handler = {&srcUri},
});
addFlag({
.longName = "to",
.description = "URL of the destination Nix store.",
.labels = {"store-uri"},
.handler = {&dstUri},
});
}
ref<Store> CopyCommand::createStore()
{
return srcUri.empty() ? StoreCommand::createStore() : openStore(srcUri);
}
ref<Store> CopyCommand::getDstStore()
{
if (srcUri.empty() && dstUri.empty())
throw UsageError("you must pass '--from' and/or '--to'");
return dstUri.empty() ? openStore() : openStore(dstUri);
}
EvalCommand::EvalCommand()
{
addFlag({
@ -65,16 +95,33 @@ EvalCommand::EvalCommand()
extern std::function<void(const Error * error, const Env & env, const Expr & expr)> debuggerHook;
EvalCommand::~EvalCommand()
{
if (evalState)
evalState->printStats();
}
ref<Store> EvalCommand::getEvalStore()
{
if (!evalStore)
evalStore = evalStoreUrl ? openStore(*evalStoreUrl) : getStore();
return ref<Store>(evalStore);
}
ref<EvalState> EvalCommand::getEvalState()
{
if (!evalState) {
evalState =
#if HAVE_BOEHMGC
#if HAVE_BOEHMGC
std::allocate_shared<EvalState>(traceable_allocator<EvalState>(),
#else
searchPath, getEvalStore(), getStore())
#else
std::make_shared<EvalState>(
#endif
searchPath, getEvalStore(), getStore());
searchPath, getEvalStore(), getStore())
#endif
;
if (startReplOnEvalErrors)
debuggerHook = [evalState{ref<EvalState>(evalState)}](const Error * error, const Env & env, const Expr & expr) {
// clear the screen.
@ -113,19 +160,6 @@ ref<EvalState> EvalCommand::getEvalState()
return ref<EvalState>(evalState);
}
EvalCommand::~EvalCommand()
{
if (evalState)
evalState->printStats();
}
ref<Store> EvalCommand::getEvalStore()
{
if (!evalStore)
evalStore = evalStoreUrl ? openStore(*evalStoreUrl) : getStore();
return ref<Store>(evalStore);
}
BuiltPathsCommand::BuiltPathsCommand(bool recursive)
: recursive(recursive)
{

13
src/libcmd/command.hh
View file

@ -43,6 +43,19 @@ private:
std::shared_ptr<Store> _store;
};
/* A command that copies something between `--from` and `--to`
stores. */
struct CopyCommand : virtual StoreCommand
{
std::string srcUri, dstUri;
CopyCommand();
ref<Store> createStore() override;
ref<Store> getDstStore();
};
struct EvalCommand : virtual StoreCommand, MixEvalArgs
{
bool startReplOnEvalErrors = false;

52
src/libcmd/installables.cc
View file

@ -198,8 +198,9 @@ void SourceExprCommand::completeInstallable(std::string_view prefix)
prefix_ = "";
}
Value &v1(*findAlongAttrPath(*state, prefix_, *autoArgs, root).first);
state->forceValue(v1);
auto [v, pos] = findAlongAttrPath(*state, prefix_, *autoArgs, root);
Value &v1(*v);
state->forceValue(v1, pos);
Value v2;
state->autoCallFunction(*autoArgs, v1, v2);
@ -345,6 +346,18 @@ Installable::getCursor(EvalState & state)
return cursors[0];
}
static StorePath getDeriver(
ref<Store> store,
const Installable & i,
const StorePath & drvPath)
{
auto derivers = store->queryValidDerivers(drvPath);
if (derivers.empty())
throw Error("'%s' does not have a known deriver", i.what());
// FIXME: use all derivers?
return *derivers.begin();
}
struct InstallableStorePath : Installable
{
ref<Store> store;
@ -353,7 +366,7 @@ struct InstallableStorePath : Installable
InstallableStorePath(ref<Store> store, StorePath && storePath)
: store(store), storePath(std::move(storePath)) { }
std::string what() override { return store->printStorePath(storePath); }
std::string what() const override { return store->printStorePath(storePath); }
DerivedPaths toDerivedPaths() override
{
@ -374,6 +387,15 @@ struct InstallableStorePath : Installable
}
}
StorePathSet toDrvPaths(ref<Store> store) override
{
if (storePath.isDerivation()) {
return {storePath};
} else {
return {getDeriver(store, *this, storePath)};
}
}
std::optional<StorePath> getStorePath() override
{
return storePath;
@ -402,6 +424,14 @@ DerivedPaths InstallableValue::toDerivedPaths()
return res;
}
StorePathSet InstallableValue::toDrvPaths(ref<Store> store)
{
StorePathSet res;
for (auto & drv : toDerivations())
res.insert(drv.drvPath);
return res;
}
struct InstallableAttrPath : InstallableValue
{
SourceExprCommand & cmd;
@ -412,12 +442,12 @@ struct InstallableAttrPath : InstallableValue
: InstallableValue(state), cmd(cmd), v(allocRootValue(v)), attrPath(attrPath)
{ }
std::string what() override { return attrPath; }
std::string what() const override { return attrPath; }
std::pair<Value *, Pos> toValue(EvalState & state) override
{
auto [vRes, pos] = findAlongAttrPath(state, attrPath, *cmd.getAutoArgs(state), **v);
state.forceValue(*vRes);
state.forceValue(*vRes, pos);
return {vRes, pos};
}
@ -467,7 +497,7 @@ Value * InstallableFlake::getFlakeOutputs(EvalState & state, const flake::Locked
auto aOutputs = vFlake->attrs->get(state.symbols.create("outputs"));
assert(aOutputs);
state.forceValue(*aOutputs->value);
state.forceValue(*aOutputs->value, [&]() { return aOutputs->value->determinePos(noPos); });
return aOutputs->value;
}
@ -492,7 +522,7 @@ ref<eval_cache::EvalCache> openEvalCache(
auto vFlake = state.allocValue();
flake::callFlake(state, *lockedFlake, *vFlake);
state.forceAttrs(*vFlake);
state.forceAttrs(*vFlake, noPos);
auto aOutputs = vFlake->attrs->get(state.symbols.create("outputs"));
assert(aOutputs);
@ -579,7 +609,7 @@ std::pair<Value *, Pos> InstallableFlake::toValue(EvalState & state)
for (auto & attrPath : getActualAttrPaths()) {
try {
auto [v, pos] = findAlongAttrPath(state, attrPath, *emptyArgs, *vOutputs);
state.forceValue(*v);
state.forceValue(*v, pos);
return {v, pos};
} catch (AttrPathNotFound & e) {
}
@ -836,11 +866,7 @@ StorePathSet toDerivations(
[&](const DerivedPath::Opaque & bo) {
if (!useDeriver)
throw Error("argument '%s' did not evaluate to a derivation", i->what());
auto derivers = store->queryValidDerivers(bo.path);
if (derivers.empty())
throw Error("'%s' does not have a known deriver", i->what());
// FIXME: use all derivers?
drvPaths.insert(*derivers.begin());
drvPaths.insert(getDeriver(store, *i, bo.path));
},
[&](const DerivedPath::Built & bfd) {
drvPaths.insert(bfd.drvPath);

11
src/libcmd/installables.hh
View file

@ -33,10 +33,15 @@ struct Installable
{
virtual ~Installable() { }
virtual std::string what() = 0;
virtual std::string what() const = 0;
virtual DerivedPaths toDerivedPaths() = 0;
virtual StorePathSet toDrvPaths(ref<Store> store)
{
throw Error("'%s' cannot be converted to a derivation path", what());
}
DerivedPath toDerivedPath();
UnresolvedApp toApp(EvalState & state);
@ -81,6 +86,8 @@ struct InstallableValue : Installable
virtual std::vector<DerivationInfo> toDerivations() = 0;
DerivedPaths toDerivedPaths() override;
StorePathSet toDrvPaths(ref<Store> store) override;
};
struct InstallableFlake : InstallableValue
@ -99,7 +106,7 @@ struct InstallableFlake : InstallableValue
Strings && prefixes,
const flake::LockFlags & lockFlags);
std::string what() override { return flakeRef.to_string() + "#" + *attrPaths.begin(); }
std::string what() const override { return flakeRef.to_string() + "#" + *attrPaths.begin(); }
std::vector<std::string> getActualAttrPaths();

3
src/libcmd/local.mk
View file

@ -8,8 +8,9 @@ libcmd_SOURCES := $(wildcard $(d)/*.cc)
libcmd_CXXFLAGS += -I src/libutil -I src/libstore -I src/libexpr -I src/libmain -I src/libfetchers -I src/nix
libcmd_LDFLAGS = $(EDITLINE_LIBS) -llowdown -pthread
# libcmd_LDFLAGS += -llowdown -pthread
# libcmd_LDFLAGS = $(EDITLINE_LIBS) -llowdown -pthread
libcmd_LDFLAGS += $(LOWDOWN_LIBS) -pthread
libcmd_LIBS = libstore libutil libexpr libmain libfetchers libnix

12
src/libcmd/repl.cc
View file

@ -347,7 +347,7 @@ StringSet NixRepl::completePrefix(string prefix)
Expr * e = parseString(expr);
Value v;
e->eval(*state, *env, v);
state->forceAttrs(v);
state->forceAttrs(v, noPos);
for (auto & i : *v.attrs) {
string name = i.name;
@ -521,7 +521,7 @@ bool NixRepl::processLine(string line)
if (v.type() == nPath || v.type() == nString) {
PathSet context;
auto filename = state->coerceToString(noPos, v, context);
pos.file = state->symbols.create(filename);
pos.file = state->symbols.create(*filename);
} else if (v.isLambda()) {
pos = v.lambda.fun->pos;
} else {
@ -737,7 +737,7 @@ void NixRepl::loadFiles()
void NixRepl::addAttrsToScope(Value & attrs)
{
state->forceAttrs(attrs);
state->forceAttrs(attrs, [&]() { return attrs.determinePos(noPos); });
if (displ + attrs.attrs->size() >= envSize)
throw Error("environment full; cannot add more variables");
@ -766,7 +766,7 @@ void NixRepl::addVarToScope(const Symbol & name, Value & v)
Expr * NixRepl::parseString(string s)
{
Expr * e = state->parseExprFromString(s, curDir, staticEnv);
Expr * e = state->parseExprFromString(std::move(s), curDir, staticEnv);
return e;
}
@ -775,7 +775,7 @@ void NixRepl::evalString(string s, Value & v)
{
Expr * e = parseString(s);
e->eval(*state, *env, v);
state->forceValue(v);
state->forceValue(v, [&]() { return v.determinePos(noPos); });
}
@ -805,7 +805,7 @@ std::ostream & NixRepl::printValue(std::ostream & str, Value & v, unsigned int m
str.flush();
checkInterrupt();
state->forceValue(v);
state->forceValue(v, [&]() { return v.determinePos(noPos); });
switch (v.type()) {

4
src/libexpr/attr-path.cc
View file

@ -58,7 +58,7 @@ std::pair<Value *, Pos> findAlongAttrPath(EvalState & state, const string & attr
Value * vNew = state.allocValue();
state.autoCallFunction(autoArgs, *v, *vNew);
v = vNew;
state.forceValue(*v);
state.forceValue(*v, noPos);
/* It should evaluate to either a set or an expression,
according to what is specified in the attrPath. */
@ -121,7 +121,7 @@ Pos findPackageFilename(EvalState & state, Value & v, std::string what)
std::string filename(pos, 0, colon);
unsigned int lineno;
try {
lineno = std::stoi(std::string(pos, colon + 1));
lineno = std::stoi(std::string(pos, colon + 1, string::npos));
} catch (std::invalid_argument & e) {
throw ParseError("cannot parse line number '%s'", pos);
}

40
src/libexpr/attr-set.cc
View file

@ -7,26 +7,19 @@
namespace nix {
/* Allocate a new array of attributes for an attribute set with a specific
capacity. The space is implicitly reserved after the Bindings
structure. */
Bindings * EvalState::allocBindings(size_t capacity)
{
if (capacity == 0)
return &emptyBindings;
if (capacity > std::numeric_limits<Bindings::size_t>::max())
throw Error("attribute set of size %d is too big", capacity);
return new (allocBytes(sizeof(Bindings) + sizeof(Attr) * capacity)) Bindings((Bindings::size_t) capacity);
}
void EvalState::mkAttrs(Value & v, size_t capacity)
{
if (capacity == 0) {
v = vEmptySet;
return;
}
v.mkAttrs(allocBindings(capacity));
nrAttrsets++;
nrAttrsInAttrsets += capacity;
return new (allocBytes(sizeof(Bindings) + sizeof(Attr) * capacity)) Bindings((Bindings::size_t) capacity);
}
@ -41,15 +34,36 @@ Value * EvalState::allocAttr(Value & vAttrs, const Symbol & name)
}
Value * EvalState::allocAttr(Value & vAttrs, const std::string & name)
Value * EvalState::allocAttr(Value & vAttrs, std::string_view name)
{
return allocAttr(vAttrs, symbols.create(name));
}
Value & BindingsBuilder::alloc(const Symbol & name, ptr<Pos> pos)
{
auto value = state.allocValue();
bindings->push_back(Attr(name, value, pos));
return *value;
}
Value & BindingsBuilder::alloc(std::string_view name, ptr<Pos> pos)
{
return alloc(state.symbols.create(name), pos);
}
void Bindings::sort()
{
std::sort(begin(), end());
if (size_) std::sort(begin(), end());
}
Value & Value::mkAttrs(BindingsBuilder & bindings)
{
mkAttrs(bindings.finish());
return *this;
}

47
src/libexpr/attr-set.hh
View file

@ -113,5 +113,52 @@ public:
friend class EvalState;
};
/* A wrapper around Bindings that ensures that its always in sorted
order at the end. The only way to consume a BindingsBuilder is to
call finish(), which sorts the bindings. */
class BindingsBuilder
{
Bindings * bindings;
public:
// needed by std::back_inserter
using value_type = Attr;
EvalState & state;
BindingsBuilder(EvalState & state, Bindings * bindings)
: bindings(bindings), state(state)
{ }
void insert(Symbol name, Value * value, ptr<Pos> pos = ptr(&noPos))
{
insert(Attr(name, value, pos));
}
void insert(const Attr & attr)
{
push_back(attr);
}
void push_back(const Attr & attr)
{
bindings->push_back(attr);
}
Value & alloc(const Symbol & name, ptr<Pos> pos = ptr(&noPos));
Value & alloc(std::string_view name, ptr<Pos> pos = ptr(&noPos));
Bindings * finish()
{
bindings->sort();
return bindings;
}
Bindings * alreadySorted()
{
return bindings;
}
};
}

11
src/libexpr/common-eval-args.cc
View file

@ -73,17 +73,16 @@ MixEvalArgs::MixEvalArgs()
Bindings * MixEvalArgs::getAutoArgs(EvalState & state)
{
Bindings * res = state.allocBindings(autoArgs.size());
auto res = state.buildBindings(autoArgs.size());
for (auto & i : autoArgs) {
Value * v = state.allocValue();
auto v = state.allocValue();
if (i.second[0] == 'E')
state.mkThunk_(*v, state.parseExprFromString(string(i.second, 1), absPath(".")));
else
mkString(*v, string(i.second, 1));
res->push_back(Attr(state.symbols.create(i.first), v));
v->mkString(((std::string_view) i.second).substr(1));
res.insert(state.symbols.create(i.first), v);
}
res->sort();
return res;
return res.finish();
}
Path lookupFileArg(EvalState & state, string s)

4
src/libexpr/eval-cache.cc
View file

@ -336,7 +336,7 @@ Value & AttrCursor::getValue()
if (!_value) {
if (parent) {
auto & vParent = parent->first->getValue();
root->state.forceAttrs(vParent);
root->state.forceAttrs(vParent, noPos);
auto attr = vParent.attrs->get(parent->second);
if (!attr)
throw Error("attribute '%s' is unexpectedly missing", getAttrPathStr());
@ -381,7 +381,7 @@ Value & AttrCursor::forceValue()
auto & v = getValue();
try {
root->state.forceValue(v);
root->state.forceValue(v, noPos);
} catch (EvalError &) {
debug("setting '%s' to failed", getAttrPathStr());
if (root->db)

36
src/libexpr/eval-inline.hh
View file

@ -15,12 +15,6 @@ LocalNoInlineNoReturn(void throwEvalError(const Pos & pos, const char * s))
});
}
LocalNoInlineNoReturn(void throwTypeError(const char * s, const Value & v))
{
throw TypeError(s, showType(v));
}
LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const Value & v))
{
throw TypeError({
@ -31,6 +25,13 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
void EvalState::forceValue(Value & v, const Pos & pos)
{
forceValue(v, [&]() { return pos; });
}
template<typename Callable>
void EvalState::forceValue(Value & v, Callable getPos)
{
if (v.isThunk()) {
Env * env = v.thunk.env;
@ -47,31 +48,22 @@ void EvalState::forceValue(Value & v, const Pos & pos)
else if (v.isApp())
callFunction(*v.app.left, *v.app.right, v, noPos);
else if (v.isBlackhole())
throwEvalError(pos, "infinite recursion encountered");
}
inline void EvalState::forceAttrs(Value & v)
{
forceValue(v);
if (v.type() != nAttrs)
throwTypeError("value is %1% while a set was expected", v);
throwEvalError(getPos(), "infinite recursion encountered");
}
inline void EvalState::forceAttrs(Value & v, const Pos & pos)
{
forceValue(v, pos);
if (v.type() != nAttrs)
throwTypeError(pos, "value is %1% while a set was expected", v);
forceAttrs(v, [&]() { return pos; });
}
inline void EvalState::forceList(Value & v)
template <typename Callable>
inline void EvalState::forceAttrs(Value & v, Callable getPos)
{
forceValue(v);
if (!v.isList())
throwTypeError("value is %1% while a list was expected", v);
forceValue(v, getPos);
if (v.type() != nAttrs)
throwTypeError(getPos(), "value is %1% while a set was expected", v);
}

244
src/libexpr/eval.cc
View file

@ -1,5 +1,6 @@
#include "eval.hh"
#include "hash.hh"
#include "types.hh"
#include "util.hh"
#include "store-api.hh"
#include "derivations.hh"
@ -38,6 +39,19 @@ namespace nix {
std::function<void(const Error * error, const Env & env, const Expr & expr)> debuggerHook;
static char * allocString(size_t size)
{
char * t;
#if HAVE_BOEHMGC
t = (char *) GC_MALLOC_ATOMIC(size);
#else
t = malloc(size);
#endif
if (!t) throw std::bad_alloc();
return t;
}
static char * dupString(const char * s)
{
char * t;
@ -147,7 +161,7 @@ void printValue(std::ostream & str, std::set<const Value *> & active, const Valu
str << v.fpoint;
break;
default:
throw Error("invalid value");
abort();
}
active.erase(&v);
@ -207,7 +221,7 @@ string showType(const Value & v)
}
}
Pos Value::determinePos(const Pos &pos) const
Pos Value::determinePos(const Pos & pos) const
{
switch (internalType) {
case tAttrs: return *attrs->pos;
@ -414,11 +428,22 @@ EvalState::EvalState(
, sDescription(symbols.create("description"))
, sSelf(symbols.create("self"))
, sEpsilon(symbols.create(""))
, sStartSet(symbols.create("startSet"))
, sOperator(symbols.create("operator"))
, sKey(symbols.create("key"))
, sPath(symbols.create("path"))
, sPrefix(symbols.create("prefix"))
, repair(NoRepair)
, emptyBindings(0)
, store(store)
, buildStore(buildStore ? buildStore : store)
, debugStop(true)
, regexCache(makeRegexCache())
#if HAVE_BOEHMGC
, valueAllocCache(std::allocate_shared<void *>(traceable_allocator<void *>(), nullptr))
#else
, valueAllocCache(std::make_shared<void *>(nullptr))
#endif
, baseEnv(allocEnv(128))
, staticBaseEnv(new StaticEnv(false, 0))
{
@ -457,8 +482,6 @@ EvalState::EvalState(
}
}
vEmptySet.mkAttrs(allocBindings(0));
createBaseEnv();
}
@ -616,7 +639,7 @@ Value * EvalState::addPrimOp(const string & name,
auto vPrimOp = allocValue();
vPrimOp->mkPrimOp(new PrimOp { .fun = primOp, .arity = 1, .name = sym });
Value v;
mkApp(v, *vPrimOp, *vPrimOp);
v.mkApp(vPrimOp, vPrimOp);
return addConstant(name, v);
}
@ -638,7 +661,7 @@ Value * EvalState::addPrimOp(PrimOp && primOp)
auto vPrimOp = allocValue();
vPrimOp->mkPrimOp(new PrimOp(std::move(primOp)));
Value v;
mkApp(v, *vPrimOp, *vPrimOp);
v.mkApp(vPrimOp, vPrimOp);
return addConstant(primOp.name, v);
}
@ -863,6 +886,13 @@ LocalNoInlineNoReturn(void throwTypeError(const Pos & pos, const char * s, const
throw error;
}
// LocalNoInlineNoReturn(void throwTypeError(const char * s, const Value & v, Env & env, Expr *expr))
// {
// auto error = TypeError({
// .msg = hintfmt(s, showType(v))
// .errPos = e ;
// }
LocalNoInlineNoReturn(void throwAssertionError(const Pos & pos, const char * s, const string & s1, Env & env, Expr *expr))
{
auto error = AssertionError({
@ -935,14 +965,14 @@ DebugTraceStacker::DebugTraceStacker(EvalState &evalState, DebugTrace t)
debuggerHook(0, t.env, t.expr);
}
void mkString(Value & v, const char * s)
void Value::mkString(std::string_view s)
{
v.mkString(dupString(s));
mkString(dupStringWithLen(s.data(), s.size()));
}
Value & mkString(Value & v, std::string_view s, const PathSet & context)
static void copyContextToValue(Value & v, const PathSet & context)
{
v.mkString(dupStringWithLen(s.data(), s.size()));
if (!context.empty()) {
size_t n = 0;
v.string.context = (const char * *)
@ -951,13 +981,24 @@ Value & mkString(Value & v, std::string_view s, const PathSet & context)
v.string.context[n++] = dupString(i.c_str());
v.string.context[n] = 0;
}
return v;
}
void Value::mkString(std::string_view s, const PathSet & context)
{
mkString(s);
copyContextToValue(*this, context);
}
void Value::mkStringMove(const char * s, const PathSet & context)
{
mkString(s);
copyContextToValue(*this, context);
}
void mkPath(Value & v, const char * s)
void Value::mkPath(std::string_view s)
{
v.mkPath(dupString(s));
mkPath(dupStringWithLen(s.data(), s.size()));
}
@ -994,15 +1035,15 @@ Value * EvalState::allocValue()
GC_malloc_many returns a linked list of objects of the given size, where the first word
of each object is also the pointer to the next object in the list. This also means that we
have to explicitly clear the first word of every object we take. */
if (!valueAllocCache) {
valueAllocCache = GC_malloc_many(sizeof(Value));
if (!valueAllocCache) throw std::bad_alloc();
if (!*valueAllocCache) {
*valueAllocCache = GC_malloc_many(sizeof(Value));
if (!*valueAllocCache) throw std::bad_alloc();
}
/* GC_NEXT is a convenience macro for accessing the first word of an object.
Take the first list item, advance the list to the next item, and clear the next pointer. */
void * p = valueAllocCache;
GC_PTR_STORE_AND_DIRTY(&valueAllocCache, GC_NEXT(p));
void * p = *valueAllocCache;
GC_PTR_STORE_AND_DIRTY(&*valueAllocCache, GC_NEXT(p));
GC_NEXT(p) = nullptr;
nrValues++;
@ -1061,13 +1102,13 @@ void EvalState::mkThunk_(Value & v, Expr * expr)
void EvalState::mkPos(Value & v, ptr<Pos> pos)
{
if (pos->file.set()) {
mkAttrs(v, 3);
mkString(*allocAttr(v, sFile), pos->file);
mkInt(*allocAttr(v, sLine), pos->line);
mkInt(*allocAttr(v, sColumn), pos->column);
v.attrs->sort();
auto attrs = buildBindings(3);
attrs.alloc(sFile).mkString(pos->file);
attrs.alloc(sLine).mkInt(pos->line);
attrs.alloc(sColumn).mkInt(pos->column);
v.mkAttrs(attrs);
} else
mkNull(v);
v.mkNull();
}
@ -1256,8 +1297,8 @@ void ExprPath::eval(EvalState & state, Env & env, Value & v)
void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
{
state.mkAttrs(v, attrs.size() + dynamicAttrs.size());
Env *dynamicEnv = &env;
v.mkAttrs(state.buildBindings(attrs.size() + dynamicAttrs.size()).finish());
auto dynamicEnv = &env;
if (recursive) {
/* Create a new environment that contains the attributes in
@ -1294,7 +1335,7 @@ void ExprAttrs::eval(EvalState & state, Env & env, Value & v)
Hence we need __overrides.) */
if (hasOverrides) {
Value * vOverrides = (*v.attrs)[overrides->second.displ].value;
state.forceAttrs(*vOverrides);
state.forceAttrs(*vOverrides, [&]() { return vOverrides->determinePos(noPos); });
Bindings * newBnds = state.allocBindings(v.attrs->capacity() + vOverrides->attrs->size());
for (auto & i : *v.attrs)
newBnds->push_back(i);
@ -1453,20 +1494,20 @@ void ExprOpHasAttr::eval(EvalState & state, Env & env, Value & v)
e->eval(state, env, vTmp);
for (auto & i : attrPath) {
state.forceValue(*vAttrs);
state.forceValue(*vAttrs, noPos);
Bindings::iterator j;
Symbol name = getName(i, state, env);
if (vAttrs->type() != nAttrs ||
(j = vAttrs->attrs->find(name)) == vAttrs->attrs->end())
{
mkBool(v, false);
v.mkBool(false);
return;
} else {
vAttrs = j->value;
}
}
mkBool(v, true);
v.mkBool(true);
}
@ -1540,7 +1581,7 @@ void EvalState::callFunction(Value & fun, size_t nrArgs, Value * * args, Value &
/* Nope, so show the first unexpected argument to the
user. */
for (auto & i : *args[0]->attrs)
if (lambda.formals->argNames.find(i.name) == lambda.formals->argNames.end())
if (!lambda.formals->has(i.name))
throwTypeError(pos, "%1% called with unexpected argument '%2%'",
lambda, i.name, *fun.lambda.env, &lambda);
abort(); // can't happen
@ -1676,14 +1717,16 @@ void EvalState::incrFunctionCall(ExprLambda * fun)
void EvalState::autoCallFunction(Bindings & args, Value & fun, Value & res)
{
forceValue(fun);
auto pos = fun.determinePos(noPos);
forceValue(fun, pos);
if (fun.type() == nAttrs) {
auto found = fun.attrs->find(sFunctor);
if (found != fun.attrs->end()) {
Value * v = allocValue();
callFunction(*found->value, fun, *v, noPos);
forceValue(*v);
callFunction(*found->value, fun, *v, pos);
forceValue(*v, pos);
return autoCallFunction(args, *v, res);
}
}
@ -1693,22 +1736,20 @@ void EvalState::autoCallFunction(Bindings & args, Value & fun, Value & res)
return;
}
Value * actualArgs = allocValue();
mkAttrs(*actualArgs, std::max(static_cast<uint32_t>(fun.lambda.fun->formals->formals.size()), args.size()));
auto attrs = buildBindings(std::max(static_cast<uint32_t>(fun.lambda.fun->formals->formals.size()), args.size()));
if (fun.lambda.fun->formals->ellipsis) {
// If the formals have an ellipsis (eg the function accepts extra args) pass
// all available automatic arguments (which includes arguments specified on
// the command line via --arg/--argstr)
for (auto& v : args) {
actualArgs->attrs->push_back(v);
}
for (auto & v : args)
attrs.insert(v);
} else {
// Otherwise, only pass the arguments that the function accepts
for (auto & i : fun.lambda.fun->formals->formals) {
Bindings::iterator j = args.find(i.name);
if (j != args.end()) {
actualArgs->attrs->push_back(*j);
attrs.insert(*j);
} else if (!i.def) {
throwMissingArgumentError(i.pos, R"(cannot evaluate a function that has an argument without a value ('%1%')
@ -1722,9 +1763,7 @@ https://nixos.org/manual/nix/stable/#ss-functions.)",
}
}
actualArgs->attrs->sort();
callFunction(fun, *actualArgs, res, noPos);
callFunction(fun, allocValue()->mkAttrs(attrs), res, noPos);
}
@ -1759,7 +1798,7 @@ void ExprAssert::eval(EvalState & state, Env & env, Value & v)
void ExprOpNot::eval(EvalState & state, Env & env, Value & v)
{
mkBool(v, !state.evalBool(env, e));
v.mkBool(!state.evalBool(env, e));
}
@ -1767,7 +1806,7 @@ void ExprOpEq::eval(EvalState & state, Env & env, Value & v)
{
Value v1; e1->eval(state, env, v1);
Value v2; e2->eval(state, env, v2);
mkBool(v, state.eqValues(v1, v2));
v.mkBool(state.eqValues(v1, v2));
}
@ -1775,25 +1814,25 @@ void ExprOpNEq::eval(EvalState & state, Env & env, Value & v)
{
Value v1; e1->eval(state, env, v1);
Value v2; e2->eval(state, env, v2);
mkBool(v, !state.eqValues(v1, v2));
v.mkBool(!state.eqValues(v1, v2));
}
void ExprOpAnd::eval(EvalState & state, Env & env, Value & v)
{
mkBool(v, state.evalBool(env, e1, pos) && state.evalBool(env, e2, pos));
v.mkBool(state.evalBool(env, e1, pos) && state.evalBool(env, e2, pos));
}
void ExprOpOr::eval(EvalState & state, Env & env, Value & v)
{
mkBool(v, state.evalBool(env, e1, pos) || state.evalBool(env, e2, pos));
v.mkBool(state.evalBool(env, e1, pos) || state.evalBool(env, e2, pos));
}
void ExprOpImpl::eval(EvalState & state, Env & env, Value & v)
{
mkBool(v, !state.evalBool(env, e1, pos) || state.evalBool(env, e2, pos));
v.mkBool(!state.evalBool(env, e1, pos) || state.evalBool(env, e2, pos));
}
@ -1808,7 +1847,7 @@ void ExprOpUpdate::eval(EvalState & state, Env & env, Value & v)
if (v1.attrs->size() == 0) { v = v2; return; }
if (v2.attrs->size() == 0) { v = v1; return; }
state.mkAttrs(v, v1.attrs->size() + v2.attrs->size());
auto attrs = state.buildBindings(v1.attrs->size() + v2.attrs->size());
/* Merge the sets, preferring values from the second set. Make
sure to keep the resulting vector in sorted order. */
@ -1817,17 +1856,19 @@ void ExprOpUpdate::eval(EvalState & state, Env & env, Value & v)
while (i != v1.attrs->end() && j != v2.attrs->end()) {
if (i->name == j->name) {
v.attrs->push_back(*j);
attrs.insert(*j);
++i; ++j;
}
else if (i->name < j->name)
v.attrs->push_back(*i++);
attrs.insert(*i++);
else
v.attrs->push_back(*j++);
attrs.insert(*j++);
}
while (i != v1.attrs->end()) v.attrs->push_back(*i++);
while (j != v2.attrs->end()) v.attrs->push_back(*j++);
while (i != v1.attrs->end()) attrs.insert(*i++);
while (j != v2.attrs->end()) attrs.insert(*j++);
v.mkAttrs(attrs.alreadySorted());
state.nrOpUpdateValuesCopied += v.attrs->size();
}
@ -1874,15 +1915,39 @@ void EvalState::concatLists(Value & v, size_t nrLists, Value * * lists, const Po
void ExprConcatStrings::eval(EvalState & state, Env & env, Value & v)
{
PathSet context;
std::ostringstream s;
std::vector<BackedStringView> s;
size_t sSize = 0;
NixInt n = 0;
NixFloat nf = 0;
bool first = !forceString;
ValueType firstType = nString;
const auto str = [&] {
std::string result;
result.reserve(sSize);
for (const auto & part : s) result += *part;
return result;
};
/* c_str() is not str().c_str() because we want to create a string
Value. allocating a GC'd string directly and moving it into a
Value lets us avoid an allocation and copy. */
const auto c_str = [&] {
char * result = allocString(sSize + 1);
char * tmp = result;
for (const auto & part : s) {
memcpy(tmp, part->data(), part->size());
tmp += part->size();
}
*tmp = 0;
return result;
};
Value values[es->size()];
Value * vTmpP = values;
for (auto & [i_pos, i] : *es) {
Value vTmp;
Value & vTmp = *vTmpP++;
i->eval(state, env, vTmp);
/* If the first element is a path, then the result will also
@ -1911,26 +1976,29 @@ void ExprConcatStrings::eval(EvalState & state, Env & env, Value & v)
nf += vTmp.fpoint;
} else
throwEvalError(i_pos, "cannot add %1% to a float", showType(vTmp), env, this);
} else
} else {
if (s.empty()) s.reserve(es->size());
/* skip canonization of first path, which would only be not
canonized in the first place if it's coming from a ./${foo} type
path */
s << state.coerceToString(i_pos, vTmp, context, false, firstType == nString, !first);
auto part = state.coerceToString(i_pos, vTmp, context, false, firstType == nString, !first);
sSize += part->size();
s.emplace_back(std::move(part));
}
first = false;
}
if (firstType == nInt)
mkInt(v, n);
v.mkInt(n);
else if (firstType == nFloat)
mkFloat(v, nf);
v.mkFloat(nf);
else if (firstType == nPath) {
if (!context.empty())
throwEvalError(pos, "a string that refers to a store path cannot be appended to a path");
auto path = canonPath(s.str());
mkPath(v, path.c_str());
v.mkPath(canonPath(str()));
} else
mkString(v, s.str(), context);
v.mkStringMove(c_str(), context);
}
@ -1949,7 +2017,7 @@ void EvalState::forceValueDeep(Value & v)
recurse = [&](Value & v) {
if (!seen.insert(&v).second) return;
forceValue(v);
forceValue(v, [&]() { return v.determinePos(noPos); });
if (v.type() == nAttrs) {
for (auto & i : *v.attrs)
@ -2028,14 +2096,14 @@ void EvalState::forceFunction(Value & v, const Pos & pos)
}
string EvalState::forceString(Value & v, const Pos & pos)
std::string_view EvalState::forceString(Value & v, const Pos & pos)
{
forceValue(v, pos);
if (v.type() != nString) {
throwTypeError(pos, "value is %1% while a string was expected", v,
fakeEnv(1), 0);
}
return string(v.string.s);
return v.string.s;
}
@ -2070,17 +2138,17 @@ std::vector<std::pair<Path, std::string>> Value::getContext()
}
string EvalState::forceString(Value & v, PathSet & context, const Pos & pos)
std::string_view EvalState::forceString(Value & v, PathSet & context, const Pos & pos)
{
string s = forceString(v, pos);
auto s = forceString(v, pos);
copyContext(v, context);
return s;
}
string EvalState::forceStringNoCtx(Value & v, const Pos & pos)
std::string_view EvalState::forceStringNoCtx(Value & v, const Pos & pos)
{
string s = forceString(v, pos);
auto s = forceString(v, pos);
if (v.string.context) {
if (pos)
throwEvalError(pos, "the string '%1%' is not allowed to refer to a store path (such as '%2%')",
@ -2098,7 +2166,7 @@ bool EvalState::isDerivation(Value & v)
if (v.type() != nAttrs) return false;
Bindings::iterator i = v.attrs->find(sType);
if (i == v.attrs->end()) return false;
forceValue(*i->value);
forceValue(*i->value, *i->pos);
if (i->value->type() != nString) return false;
return strcmp(i->value->string.s, "derivation") == 0;
}
@ -2111,34 +2179,35 @@ std::optional<string> EvalState::tryAttrsToString(const Pos & pos, Value & v,
if (i != v.attrs->end()) {
Value v1;
callFunction(*i->value, v, v1, pos);
return coerceToString(pos, v1, context, coerceMore, copyToStore);
return coerceToString(pos, v1, context, coerceMore, copyToStore).toOwned();
}
return {};
}
string EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
BackedStringView EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
bool coerceMore, bool copyToStore, bool canonicalizePath)
{
forceValue(v, pos);
string s;
if (v.type() == nString) {
copyContext(v, context);
return v.string.s;
return std::string_view(v.string.s);
}
if (v.type() == nPath) {
Path path(canonicalizePath ? canonPath(v.path) : v.path);
return copyToStore ? copyPathToStore(context, path) : path;
BackedStringView path(PathView(v.path));
if (canonicalizePath)
path = canonPath(*path);
if (copyToStore)
path = copyPathToStore(context, std::move(path).toOwned());
return path;
}
if (v.type() == nAttrs) {
auto maybeString = tryAttrsToString(pos, v, context, coerceMore, copyToStore);
if (maybeString) {
return *maybeString;
}
if (maybeString)
return std::move(*maybeString);
auto i = v.attrs->find(sOutPath);
if (i == v.attrs->end())
throwTypeError(pos, "cannot coerce a set to a string",
@ -2161,14 +2230,13 @@ string EvalState::coerceToString(const Pos & pos, Value & v, PathSet & context,
if (v.isList()) {
string result;
for (auto [n, v2] : enumerate(v.listItems())) {
result += coerceToString(pos, *v2,
context, coerceMore, copyToStore);
result += *coerceToString(pos, *v2, context, coerceMore, copyToStore);
if (n < v.listSize() - 1
/* !!! not quite correct */
&& (!v2->isList() || v2->listSize() != 0))
result += " ";
}
return result;
return std::move(result);
}
}
@ -2205,7 +2273,7 @@ string EvalState::copyPathToStore(PathSet & context, const Path & path)
Path EvalState::coerceToPath(const Pos & pos, Value & v, PathSet & context)
{
string path = coerceToString(pos, v, context, false, false);
string path = coerceToString(pos, v, context, false, false).toOwned();
if (path == "" || path[0] != '/')
throwEvalError(pos, "string '%1%' doesn't represent an absolute path", path,
fakeEnv(1), 0);
@ -2215,8 +2283,8 @@ Path EvalState::coerceToPath(const Pos & pos, Value & v, PathSet & context)
bool EvalState::eqValues(Value & v1, Value & v2)
{
forceValue(v1);
forceValue(v2);
forceValue(v1, noPos);
forceValue(v2, noPos);
/* !!! Hack to support some old broken code that relies on pointer
equality tests between sets. (Specifically, builderDefs calls

53
src/libexpr/eval.hh
View file

@ -1,6 +1,7 @@
#pragma once
#include "attr-set.hh"
#include "types.hh"
#include "value.hh"
#include "nixexpr.hh"
#include "symbol-table.hh"
@ -49,8 +50,6 @@ struct Env
valmap * mapStaticEnvBindings(const StaticEnv &se, const Env &env);
Value & mkString(Value & v, std::string_view s, const PathSet & context = PathSet());
void copyContext(const Value & v, PathSet & context);
@ -93,7 +92,8 @@ public:
sContentAddressed,
sOutputHash, sOutputHashAlgo, sOutputHashMode,
sRecurseForDerivations,
sDescription, sSelf, sEpsilon;
sDescription, sSelf, sEpsilon, sStartSet, sOperator, sKey, sPath,
sPrefix;
Symbol sDerivationNix;
/* If set, force copying files to the Nix store even if they
@ -104,7 +104,7 @@ public:
mode. */
std::optional<PathSet> allowedPaths;
Value vEmptySet;
Bindings emptyBindings;
/* Store used to materialise .drv files. */
const ref<Store> store;
@ -148,7 +148,7 @@ private:
std::shared_ptr<RegexCache> regexCache;
/* Allocation cache for GC'd Value objects. */
void * valueAllocCache = nullptr;
std::shared_ptr<void *> valueAllocCache;
public:
@ -195,8 +195,8 @@ public:
Expr * parseExprFromFile(const Path & path, std::shared_ptr<StaticEnv> & staticEnv);
/* Parse a Nix expression from the specified string. */
Expr * parseExprFromString(std::string_view s, const Path & basePath, std::shared_ptr<StaticEnv> & staticEnv);
Expr * parseExprFromString(std::string_view s, const Path & basePath);
Expr * parseExprFromString(std::string s, const Path & basePath, , std::shared_ptr<StaticEnv> & staticEnv);
Expr * parseExprFromString(std::string s, const Path & basePath);
Expr * parseStdin();
@ -216,8 +216,8 @@ public:
void resetFileCache();
/* Look up a file in the search path. */
Path findFile(const string & path);
Path findFile(SearchPath & searchPath, const string & path, const Pos & pos = noPos);
Path findFile(const std::string_view path);
Path findFile(SearchPath & searchPath, const std::string_view path, const Pos & pos = noPos);
/* If the specified search path element is a URI, download it. */
std::pair<bool, std::string> resolveSearchPathElem(const SearchPathElem & elem);
@ -236,7 +236,10 @@ public:
of the evaluation of the thunk. If `v' is a delayed function
application, call the function and overwrite `v' with the
result. Otherwise, this is a no-op. */
inline void forceValue(Value & v, const Pos & pos = noPos);
inline void forceValue(Value & v, const Pos & pos);
template <typename Callable>
inline void forceValue(Value & v, Callable getPos);
/* Force a value, then recursively force list elements and
attributes. */
@ -246,14 +249,17 @@ public:
NixInt forceInt(Value & v, const Pos & pos);
NixFloat forceFloat(Value & v, const Pos & pos);
bool forceBool(Value & v, const Pos & pos);
inline void forceAttrs(Value & v);
inline void forceAttrs(Value & v, const Pos & pos);
inline void forceList(Value & v);
void forceAttrs(Value & v, const Pos & pos);
template <typename Callable>
inline void forceAttrs(Value & v, Callable getPos);
inline void forceList(Value & v, const Pos & pos);
void forceFunction(Value & v, const Pos & pos); // either lambda or primop
string forceString(Value & v, const Pos & pos = noPos);
string forceString(Value & v, PathSet & context, const Pos & pos = noPos);
string forceStringNoCtx(Value & v, const Pos & pos = noPos);
std::string_view forceString(Value & v, const Pos & pos = noPos);
std::string_view forceString(Value & v, PathSet & context, const Pos & pos = noPos);
std::string_view forceStringNoCtx(Value & v, const Pos & pos = noPos);
/* Return true iff the value `v' denotes a derivation (i.e. a
set with attribute `type = "derivation"'). */
@ -266,7 +272,7 @@ public:
string. If `coerceMore' is set, also converts nulls, integers,
booleans and lists to a string. If `copyToStore' is set,
referenced paths are copied to the Nix store as a side effect. */
string coerceToString(const Pos & pos, Value & v, PathSet & context,
BackedStringView coerceToString(const Pos & pos, Value & v, PathSet & context,
bool coerceMore = false, bool copyToStore = true,
bool canonicalizePath = true);
@ -324,7 +330,7 @@ private:
friend struct ExprAttrs;
friend struct ExprLet;
Expr * parse(const char * text, FileOrigin origin, const Path & path,
Expr * parse(char * text, size_t length, FileOrigin origin, const PathView path,
const Path & basePath, std::shared_ptr<StaticEnv> & staticEnv);
public:
@ -353,12 +359,16 @@ public:
Env & allocEnv(size_t size);
Value * allocAttr(Value & vAttrs, const Symbol & name);
Value * allocAttr(Value & vAttrs, const std::string & name);
Value * allocAttr(Value & vAttrs, std::string_view name);
Bindings * allocBindings(size_t capacity);
BindingsBuilder buildBindings(size_t capacity)
{
return BindingsBuilder(*this, allocBindings(capacity));
}
void mkList(Value & v, size_t length);
void mkAttrs(Value & v, size_t capacity);
void mkThunk_(Value & v, Expr * expr);
void mkPos(Value & v, ptr<Pos> pos);
@ -411,6 +421,9 @@ private:
friend struct ExprSelect;
friend void prim_getAttr(EvalState & state, const Pos & pos, Value * * args, Value & v);
friend void prim_match(EvalState & state, const Pos & pos, Value * * args, Value & v);
friend void prim_split(EvalState & state, const Pos & pos, Value * * args, Value & v);
friend struct Value;
};
class DebugTraceStacker {

123
src/libexpr/flake/flake.cc
View file

@ -89,11 +89,11 @@ static void expectType(EvalState & state, ValueType type,
static std::map<FlakeId, FlakeInput> parseFlakeInputs(
EvalState & state, Value * value, const Pos & pos,
const std::optional<Path> & baseDir);
const std::optional<Path> & baseDir, InputPath lockRootPath);
static FlakeInput parseFlakeInput(EvalState & state,
const std::string & inputName, Value * value, const Pos & pos,
const std::optional<Path> & baseDir)
const std::optional<Path> & baseDir, InputPath lockRootPath)
{
expectType(state, nAttrs, *value, pos);
@ -117,10 +117,12 @@ static FlakeInput parseFlakeInput(EvalState & state,
expectType(state, nBool, *attr.value, *attr.pos);
input.isFlake = attr.value->boolean;
} else if (attr.name == sInputs) {
input.overrides = parseFlakeInputs(state, attr.value, *attr.pos, baseDir);
input.overrides = parseFlakeInputs(state, attr.value, *attr.pos, baseDir, lockRootPath);
} else if (attr.name == sFollows) {
expectType(state, nString, *attr.value, *attr.pos);
input.follows = parseInputPath(attr.value->string.s);
auto follows(parseInputPath(attr.value->string.s));
follows.insert(follows.begin(), lockRootPath.begin(), lockRootPath.end());
input.follows = follows;
} else {
switch (attr.value->type()) {
case nString:
@ -166,7 +168,7 @@ static FlakeInput parseFlakeInput(EvalState & state,
static std::map<FlakeId, FlakeInput> parseFlakeInputs(
EvalState & state, Value * value, const Pos & pos,
const std::optional<Path> & baseDir)
const std::optional<Path> & baseDir, InputPath lockRootPath)
{
std::map<FlakeId, FlakeInput> inputs;
@ -178,7 +180,8 @@ static std::map<FlakeId, FlakeInput> parseFlakeInputs(
inputAttr.name,
inputAttr.value,
*inputAttr.pos,
baseDir));
baseDir,
lockRootPath));
}
return inputs;
@ -188,7 +191,8 @@ static Flake getFlake(
EvalState & state,
const FlakeRef & originalRef,
bool allowLookup,
FlakeCache & flakeCache)
FlakeCache & flakeCache,
InputPath lockRootPath)
{
auto [sourceInfo, resolvedRef, lockedRef] = fetchOrSubstituteTree(
state, originalRef, allowLookup, flakeCache);
@ -223,7 +227,7 @@ static Flake getFlake(
auto sInputs = state.symbols.create("inputs");
if (auto inputs = vInfo.attrs->get(sInputs))
flake.inputs = parseFlakeInputs(state, inputs->value, *inputs->pos, flakeDir);
flake.inputs = parseFlakeInputs(state, inputs->value, *inputs->pos, flakeDir, lockRootPath);
auto sOutputs = state.symbols.create("outputs");
@ -250,7 +254,13 @@ static Flake getFlake(
for (auto & setting : *nixConfig->value->attrs) {
forceTrivialValue(state, *setting.value, *setting.pos);
if (setting.value->type() == nString)
flake.config.settings.insert({setting.name, state.forceStringNoCtx(*setting.value, *setting.pos)});
flake.config.settings.insert({setting.name, string(state.forceStringNoCtx(*setting.value, *setting.pos))});
else if (setting.value->type() == nPath) {
PathSet emptyContext = {};
flake.config.settings.emplace(
setting.name,
state.coerceToString(*setting.pos, *setting.value, emptyContext, false, true, true) .toOwned());
}
else if (setting.value->type() == nInt)
flake.config.settings.insert({setting.name, state.forceInt(*setting.value, *setting.pos)});
else if (setting.value->type() == nBool)
@ -261,7 +271,7 @@ static Flake getFlake(
if (elem->type() != nString)
throw TypeError("list element in flake configuration setting '%s' is %s while a string is expected",
setting.name, showType(*setting.value));
ss.push_back(state.forceStringNoCtx(*elem, *setting.pos));
ss.emplace_back(state.forceStringNoCtx(*elem, *setting.pos));
}
flake.config.settings.insert({setting.name, ss});
}
@ -283,6 +293,11 @@ static Flake getFlake(
return flake;
}
Flake getFlake(EvalState & state, const FlakeRef & originalRef, bool allowLookup, FlakeCache & flakeCache)
{
return getFlake(state, originalRef, allowLookup, flakeCache, {});
}
Flake getFlake(EvalState & state, const FlakeRef & originalRef, bool allowLookup)
{
FlakeCache flakeCache;
@ -328,22 +343,12 @@ LockedFlake lockFlake(
std::vector<FlakeRef> parents;
struct LockParent {
/* The path to this parent. */
InputPath path;
/* Whether we are currently inside a top-level lockfile
(inputs absolute) or subordinate lockfile (inputs
relative). */
bool absolute;
};
std::function<void(
const FlakeInputs & flakeInputs,
std::shared_ptr<Node> node,
const InputPath & inputPathPrefix,
std::shared_ptr<const Node> oldNode,
const LockParent & parent,
const InputPath & lockRootPath,
const Path & parentPath,
bool trustLock)>
computeLocks;
@ -353,7 +358,7 @@ LockedFlake lockFlake(
std::shared_ptr<Node> node,
const InputPath & inputPathPrefix,
std::shared_ptr<const Node> oldNode,
const LockParent & parent,
const InputPath & lockRootPath,
const Path & parentPath,
bool trustLock)
{
@ -398,17 +403,7 @@ LockedFlake lockFlake(
if (input.follows) {
InputPath target;
if (parent.absolute && !hasOverride) {
target = *input.follows;
} else {
if (hasOverride) {
target = inputPathPrefix;
target.pop_back();
} else
target = parent.path;
for (auto & i : *input.follows) target.push_back(i);
}
target.insert(target.end(), input.follows->begin(), input.follows->end());
debug("input '%s' follows '%s'", inputPathS, printInputPath(target));
node->inputs.insert_or_assign(id, target);
@ -481,23 +476,25 @@ LockedFlake lockFlake(
break;
}
}
auto absoluteFollows(lockRootPath);
absoluteFollows.insert(absoluteFollows.end(), follows->begin(), follows->end());
fakeInputs.emplace(i.first, FlakeInput {
.follows = *follows,
.follows = absoluteFollows,
});
}
}
}
LockParent newParent {
.path = inputPath,
.absolute = true
};
auto localPath(parentPath);
// If this input is a path, recurse it down.
// This allows us to resolve path inputs relative to the current flake.
if ((*input.ref).input.getType() == "path")
localPath = absPath(*input.ref->input.getSourcePath(), parentPath);
computeLocks(
mustRefetch
? getFlake(state, oldLock->lockedRef, false, flakeCache).inputs
? getFlake(state, oldLock->lockedRef, false, flakeCache, inputPath).inputs
: fakeInputs,
childNode, inputPath, oldLock, newParent, parentPath, !mustRefetch);
childNode, inputPath, oldLock, lockRootPath, parentPath, !mustRefetch);
} else {
/* We need to create a new lock file entry. So fetch
@ -516,7 +513,7 @@ LockedFlake lockFlake(
if (localRef.input.getType() == "path")
localPath = absPath(*input.ref->input.getSourcePath(), parentPath);
auto inputFlake = getFlake(state, localRef, useRegistries, flakeCache);
auto inputFlake = getFlake(state, localRef, useRegistries, flakeCache, inputPath);
/* Note: in case of an --override-input, we use
the *original* ref (input2.ref) for the
@ -537,13 +534,6 @@ LockedFlake lockFlake(
parents.push_back(*input.ref);
Finally cleanup([&]() { parents.pop_back(); });
// Follows paths from existing inputs in the top-level lockfile are absolute,
// whereas paths in subordinate lockfiles are relative to those lockfiles.
LockParent newParent {
.path = inputPath,
.absolute = oldLock ? true : false
};
/* Recursively process the inputs of this
flake. Also, unless we already have this flake
in the top-level lock file, use this flake's
@ -554,7 +544,7 @@ LockedFlake lockFlake(
? std::dynamic_pointer_cast<const Node>(oldLock)
: LockFile::read(
inputFlake.sourceInfo->actualPath + "/" + inputFlake.lockedRef.subdir + "/flake.lock").root,
newParent, localPath, false);
oldLock ? lockRootPath : inputPath, localPath, false);
}
else {
@ -572,17 +562,12 @@ LockedFlake lockFlake(
}
};
LockParent parent {
.path = {},
.absolute = true
};
// Bring in the current ref for relative path resolution if we have it
auto parentPath = canonPath(flake.sourceInfo->actualPath + "/" + flake.lockedRef.subdir, true);
computeLocks(
flake.inputs, newLockFile.root, {},
lockFlags.recreateLockFile ? nullptr : oldLockFile.root, parent, parentPath, false);
lockFlags.recreateLockFile ? nullptr : oldLockFile.root, {}, parentPath, false);
for (auto & i : lockFlags.inputOverrides)
if (!overridesUsed.count(i.first))
@ -629,12 +614,24 @@ LockedFlake lockFlake(
newLockFile.write(path);
std::optional<std::string> commitMessage = std::nullopt;
if (lockFlags.commitLockFile) {
std::string cm;
cm = settings.commitLockFileSummary.get();
if (cm == "") {
cm = fmt("%s: %s", relPath, lockFileExists ? "Update" : "Add");
}
cm += "\n\nFlake lock file updates:\n\n";
cm += filterANSIEscapes(diff, true);
commitMessage = cm;
}
topRef.input.markChangedFile(
(topRef.subdir == "" ? "" : topRef.subdir + "/") + "flake.lock",
lockFlags.commitLockFile
? std::optional<std::string>(fmt("%s: %s\n\nFlake lock file changes:\n\n%s",
relPath, lockFileExists ? "Update" : "Add", filterANSIEscapes(diff, true)))
: std::nullopt);
commitMessage);
/* Rewriting the lockfile changed the top-level
repo, so we should re-read it. FIXME: we could
@ -682,7 +679,7 @@ void callFlake(EvalState & state,
auto vTmp1 = state.allocValue();
auto vTmp2 = state.allocValue();
mkString(*vLocks, lockedFlake.lockFile.to_string());
vLocks->mkString(lockedFlake.lockFile.to_string());
emitTreeAttrs(
state,
@ -692,7 +689,7 @@ void callFlake(EvalState & state,
false,
lockedFlake.flake.forceDirty);
mkString(*vRootSubdir, lockedFlake.flake.lockedRef.subdir);
vRootSubdir->mkString(lockedFlake.flake.lockedRef.subdir);
if (!state.vCallFlake) {
state.vCallFlake = allocRootValue(state.allocValue());
@ -710,7 +707,7 @@ static void prim_getFlake(EvalState & state, const Pos & pos, Value * * args, Va
{
state.requireExperimentalFeatureOnEvaluation(Xp::Flakes, "builtins.getFlake", pos);
auto flakeRefS = state.forceStringNoCtx(*args[0], pos);
string flakeRefS(state.forceStringNoCtx(*args[0], pos));
auto flakeRef = parseFlakeRef(flakeRefS, {}, true);
if (evalSettings.pureEval && !flakeRef.input.isImmutable())
throw Error("cannot call 'getFlake' on mutable flake reference '%s', at %s (use --impure to override)", flakeRefS, pos);

22
src/libexpr/flake/flakeref.cc
View file

@ -122,6 +122,28 @@ std::pair<FlakeRef, std::string> parseFlakeRefWithFragment(
if (isFlake) {
if (!allowMissing && !pathExists(path + "/flake.nix")){
notice("path '%s' does not contain a 'flake.nix', searching up",path);
// Save device to detect filesystem boundary
dev_t device = lstat(path).st_dev;
bool found = false;
while (path != "/") {
if (pathExists(path + "/flake.nix")) {
found = true;
break;
} else if (pathExists(path + "/.git"))
throw Error("path '%s' is not part of a flake (neither it nor its parent directories contain a 'flake.nix' file)", path);
else {
if (lstat(path).st_dev != device)
throw Error("unable to find a flake before encountering filesystem boundary at '%s'", path);
}
path = dirOf(path);
}
if (!found)
throw BadURL("could not find a flake.nix file");
}
if (!S_ISDIR(lstat(path).st_mode))
throw BadURL("path '%s' is not a flake (because it's not a directory)", path);

21
src/libexpr/get-drvs.cc
View file

@ -104,10 +104,10 @@ DrvInfo::Outputs DrvInfo::queryOutputs(bool onlyOutputsToInstall)
/* For each output... */
for (auto elem : i->value->listItems()) {
/* Evaluate the corresponding set. */
string name = state->forceStringNoCtx(*elem, *i->pos);
string name(state->forceStringNoCtx(*elem, *i->pos));
Bindings::iterator out = attrs->find(state->symbols.create(name));
if (out == attrs->end()) continue; // FIXME: throw error?
state->forceAttrs(*out->value);
state->forceAttrs(*out->value, *i->pos);
/* And evaluate its ‘outPath’ attribute. */
Bindings::iterator outPath = out->value->attrs->find(state->sOutPath);
@ -172,7 +172,7 @@ StringSet DrvInfo::queryMetaNames()
bool DrvInfo::checkMeta(Value & v)
{
state->forceValue(v);
state->forceValue(v, [&]() { return v.determinePos(noPos); });
if (v.type() == nList) {
for (auto elem : v.listItems())
if (!checkMeta(*elem)) return false;
@ -254,15 +254,14 @@ bool DrvInfo::queryMetaBool(const string & name, bool def)
void DrvInfo::setMeta(const string & name, Value * v)
{
getMeta();
Bindings * old = meta;
meta = state->allocBindings(1 + (old ? old->size() : 0));
auto attrs = state->buildBindings(1 + (meta ? meta->size() : 0));
Symbol sym = state->symbols.create(name);
if (old)
for (auto i : *old)
if (meta)
for (auto i : *meta)
if (i.name != sym)
meta->push_back(i);
if (v) meta->push_back(Attr(sym, v));
meta->sort();
attrs.insert(i);
if (v) attrs.insert(sym, v);
meta = attrs.finish();
}
@ -279,7 +278,7 @@ static bool getDerivation(EvalState & state, Value & v,
bool ignoreAssertionFailures)
{
try {
state.forceValue(v);
state.forceValue(v, [&]() { return v.determinePos(noPos); });
if (!state.isDerivation(v)) return true;
/* Remove spurious duplicates (e.g., a set like `rec { x =

40
src/libexpr/json-to-value.cc
View file

@ -37,10 +37,10 @@ class JSONSax : nlohmann::json_sax<json> {
ValueMap attrs;
std::unique_ptr<JSONState> resolve(EvalState & state) override
{
Value & v = parent->value(state);
state.mkAttrs(v, attrs.size());
auto attrs2 = state.buildBindings(attrs.size());
for (auto & i : attrs)
v.attrs->push_back(Attr(i.first, i.second));
attrs2.insert(i.first, i.second);
parent->value(state).mkAttrs(attrs2.alreadySorted());
return std::move(parent);
}
void add() override { v = nullptr; }
@ -76,45 +76,51 @@ class JSONSax : nlohmann::json_sax<json> {
EvalState & state;
std::unique_ptr<JSONState> rs;
template<typename T, typename... Args> inline bool handle_value(T f, Args... args)
{
f(rs->value(state), args...);
rs->add();
return true;
}
public:
JSONSax(EvalState & state, Value & v) : state(state), rs(new JSONState(&v)) {};
bool null()
{
return handle_value(mkNull);
rs->value(state).mkNull();
rs->add();
return true;
}
bool boolean(bool val)
{
return handle_value(mkBool, val);
rs->value(state).mkBool(val);
rs->add();
return true;
}
bool number_integer(number_integer_t val)
{
return handle_value(mkInt, val);
rs->value(state).mkInt(val);
rs->add();
return true;
}
bool number_unsigned(number_unsigned_t val)
{
return handle_value(mkInt, val);
rs->value(state).mkInt(val);
rs->add();
return true;
}
bool number_float(number_float_t val, const string_t & s)
{
return handle_value(mkFloat, val);
rs->value(state).mkFloat(val);
rs->add();
return true;
}
bool string(string_t & val)
{
return handle_value<void(Value&, const char*)>(mkString, val.c_str());
rs->value(state).mkString(val);
rs->add();
return true;
}
#if NLOHMANN_JSON_VERSION_MAJOR >= 3 && NLOHMANN_JSON_VERSION_MINOR >= 8
bool binary(binary_t&)
{
@ -157,7 +163,7 @@ public:
}
};
void parseJSON(EvalState & state, const string & s_, Value & v)
void parseJSON(EvalState & state, const std::string_view & s_, Value & v)
{
JSONSax parser(state, v);
bool res = json::sax_parse(s_, &parser);

2
src/libexpr/json-to-value.hh
View file

@ -8,6 +8,6 @@ namespace nix {
MakeError(JSONParseError, EvalError);
void parseJSON(EvalState & state, const string & s, Value & v);
void parseJSON(EvalState & state, const std::string_view & s, Value & v);
}

55
src/libexpr/lexer.l
View file

@ -64,29 +64,32 @@ static void adjustLoc(YYLTYPE * loc, const char * s, size_t len)
}
// FIXME: optimize
static Expr * unescapeStr(SymbolTable & symbols, const char * s, size_t length)
// we make use of the fact that the parser receives a private copy of the input
// string and can munge around in it.
static StringToken unescapeStr(SymbolTable & symbols, char * s, size_t length)
{
string t;
t.reserve(length);
char * result = s;
char * t = s;
char c;
// the input string is terminated with *two* NULs, so we can safely take
// *one* character after the one being checked against.
while ((c = *s++)) {
if (c == '\\') {
assert(*s);
c = *s++;
if (c == 'n') t += '\n';
else if (c == 'r') t += '\r';
else if (c == 't') t += '\t';
else t += c;
if (c == 'n') *t = '\n';
else if (c == 'r') *t = '\r';
else if (c == 't') *t = '\t';
else *t = c;
}
else if (c == '\r') {
/* Normalise CR and CR/LF into LF. */
t += '\n';
*t = '\n';
if (*s == '\n') s++; /* cr/lf */
}
else t += c;
else *t = c;
t++;
}
return new ExprString(symbols.create(t));
return {result, size_t(t - result)};
}
@ -139,7 +142,7 @@ or { return OR_KW; }
\/\/ { return UPDATE; }
\+\+ { return CONCAT; }
{ID} { yylval->id = strdup(yytext); return ID; }
{ID} { yylval->id = {yytext, (size_t) yyleng}; return ID; }
{INT} { errno = 0;
try {
yylval->n = boost::lexical_cast<int64_t>(yytext);
@ -173,7 +176,7 @@ or { return OR_KW; }
/* It is impossible to match strings ending with '$' with one
regex because trailing contexts are only valid at the end
of a rule. (A sane but undocumented limitation.) */
yylval->e = unescapeStr(data->symbols, yytext, yyleng);
yylval->str = unescapeStr(data->symbols, yytext, yyleng);
return STR;
}
<STRING>\$\{ { PUSH_STATE(DEFAULT); return DOLLAR_CURLY; }
@ -188,26 +191,26 @@ or { return OR_KW; }
\'\'(\ *\n)? { PUSH_STATE(IND_STRING); return IND_STRING_OPEN; }
<IND_STRING>([^\$\']|\$[^\{\']|\'[^\'\$])+ {
yylval->e = new ExprIndStr(yytext);
yylval->str = {yytext, (size_t) yyleng, true};
return IND_STR;
}
<IND_STRING>\'\'\$ |
<IND_STRING>\$ {
yylval->e = new ExprIndStr("$");
yylval->str = {"$", 1};
return IND_STR;
}
<IND_STRING>\'\'\' {
yylval->e = new ExprIndStr("''");
yylval->str = {"''", 2};
return IND_STR;
}
<IND_STRING>\'\'\\{ANY} {
yylval->e = unescapeStr(data->symbols, yytext + 2, yyleng - 2);
yylval->str = unescapeStr(data->symbols, yytext + 2, yyleng - 2);
return IND_STR;
}
<IND_STRING>\$\{ { PUSH_STATE(DEFAULT); return DOLLAR_CURLY; }
<IND_STRING>\'\' { POP_STATE(); return IND_STRING_CLOSE; }
<IND_STRING>\' {
yylval->e = new ExprIndStr("'");
yylval->str = {"'", 1};
return IND_STR;
}
@ -221,14 +224,14 @@ or { return OR_KW; }
<PATH_START>{PATH_SEG} {
POP_STATE();
PUSH_STATE(INPATH_SLASH);
yylval->path = strdup(yytext);
yylval->path = {yytext, (size_t) yyleng};
return PATH;
}
<PATH_START>{HPATH_START} {
POP_STATE();
PUSH_STATE(INPATH_SLASH);
yylval->path = strdup(yytext);
yylval->path = {yytext, (size_t) yyleng};
return HPATH;
}
@ -237,7 +240,7 @@ or { return OR_KW; }
PUSH_STATE(INPATH_SLASH);
else
PUSH_STATE(INPATH);
yylval->path = strdup(yytext);
yylval->path = {yytext, (size_t) yyleng};
return PATH;
}
{HPATH} {
@ -245,7 +248,7 @@ or { return OR_KW; }
PUSH_STATE(INPATH_SLASH);
else
PUSH_STATE(INPATH);
yylval->path = strdup(yytext);
yylval->path = {yytext, (size_t) yyleng};
return HPATH;
}
@ -261,7 +264,7 @@ or { return OR_KW; }
PUSH_STATE(INPATH_SLASH);
else
PUSH_STATE(INPATH);
yylval->e = new ExprString(data->symbols.create(string(yytext)));
yylval->str = {yytext, (size_t) yyleng};
return STR;
}
<INPATH>{ANY} |
@ -280,8 +283,8 @@ or { return OR_KW; }
throw ParseError("path has a trailing slash");
}
{SPATH} { yylval->path = strdup(yytext); return SPATH; }
{URI} { yylval->uri = strdup(yytext); return URI; }
{SPATH} { yylval->path = {yytext, (size_t) yyleng}; return SPATH; }
{URI} { yylval->uri = {yytext, (size_t) yyleng}; return URI; }
[ \t\r\n]+ /* eat up whitespace */
\#[^\r\n]* /* single-line comments */

4
src/libexpr/nixexpr.cc
View file

@ -190,7 +190,7 @@ void ExprConcatStrings::show(std::ostream & str) const
str << "(";
for (auto & i : *es) {
if (first) first = false; else str << " + ";
str << i.second;
str << *i.second;
}
str << ")";
}
@ -527,7 +527,7 @@ string ExprLambda::showNamePos() const
size_t SymbolTable::totalSize() const
{
size_t n = 0;
for (auto & i : symbols)
for (auto & i : store)
n += i.size();
return n;
}

40
src/libexpr/nixexpr.hh
View file

@ -98,7 +98,7 @@ struct ExprInt : Expr
{
NixInt n;
Value v;
ExprInt(NixInt n) : n(n) { mkInt(v, n); };
ExprInt(NixInt n) : n(n) { v.mkInt(n); };
Value * maybeThunk(EvalState & state, Env & env);
Pos* getPos() { return 0; }
COMMON_METHODS
@ -108,7 +108,7 @@ struct ExprFloat : Expr
{
NixFloat nf;
Value v;
ExprFloat(NixFloat nf) : nf(nf) { mkFloat(v, nf); };
ExprFloat(NixFloat nf) : nf(nf) { v.mkFloat(nf); };
Value * maybeThunk(EvalState & state, Env & env);
Pos* getPos() { return 0; }
COMMON_METHODS
@ -116,22 +116,14 @@ struct ExprFloat : Expr
struct ExprString : Expr
{
Symbol s;
string s;
Value v;
ExprString(const Symbol & s) : s(s) { mkString(v, s); };
ExprString(std::string s) : s(std::move(s)) { v.mkString(this->s.data()); };
Value * maybeThunk(EvalState & state, Env & env);
Pos* getPos() { return 0; }
COMMON_METHODS
};
/* Temporary class used during parsing of indented strings. */
struct ExprIndStr : Expr
{
string s;
ExprIndStr(const string & s) : s(s) { };
Pos* getPos() { return 0; }
};
struct ExprPath : Expr
{
string s;
@ -237,10 +229,25 @@ struct Formal
struct Formals
{
typedef std::list<Formal> Formals_;
typedef std::vector<Formal> Formals_;
Formals_ formals;
std::set<Symbol> argNames; // used during parsing
bool ellipsis;
bool has(Symbol arg) const {
auto it = std::lower_bound(formals.begin(), formals.end(), arg,
[] (const Formal & f, const Symbol & sym) { return f.name < sym; });
return it != formals.end() && it->name == arg;
}
std::vector<Formal> lexicographicOrder() const
{
std::vector<Formal> result(formals.begin(), formals.end());
std::sort(result.begin(), result.end(),
[] (const Formal & a, const Formal & b) {
return std::string_view(a.name) < std::string_view(b.name);
});
return result;
}
};
struct ExprLambda : Expr
@ -253,11 +260,6 @@ struct ExprLambda : Expr
ExprLambda(const Pos & pos, const Symbol & arg, Formals * formals, Expr * body)
: pos(pos), arg(arg), formals(formals), body(body)
{
if (!arg.empty() && formals && formals->argNames.find(arg) != formals->argNames.end())
throw ParseError({
.msg = hintfmt("duplicate formal function argument '%1%'", arg),
.errPos = pos
});
};
void setName(Symbol & name);
string showNamePos() const;

210
src/libexpr/parser.y
View file

@ -16,6 +16,8 @@
#ifndef BISON_HEADER
#define BISON_HEADER
#include <variant>
#include "util.hh"
#include "nixexpr.hh"
@ -40,8 +42,22 @@ namespace nix {
{ };
};
struct ParserFormals {
std::vector<Formal> formals;
bool ellipsis = false;
};
}
// using C a struct allows us to avoid having to define the special
// members that using string_view here would implicitly delete.
struct StringToken {
const char * p;
size_t l;
bool hasIndentation;
operator std::string_view() const { return {p, l}; }
};
#define YY_DECL int yylex \
(YYSTYPE * yylval_param, YYLTYPE * yylloc_param, yyscan_t yyscanner, nix::ParseData * data)
@ -141,21 +157,46 @@ static void addAttr(ExprAttrs * attrs, AttrPath & attrPath,
}
static void addFormal(const Pos & pos, Formals * formals, const Formal & formal)
static Formals * toFormals(ParseData & data, ParserFormals * formals,
Pos pos = noPos, Symbol arg = {})
{
if (!formals->argNames.insert(formal.name).second)
std::sort(formals->formals.begin(), formals->formals.end(),
[] (const auto & a, const auto & b) {
return std::tie(a.name, a.pos) < std::tie(b.name, b.pos);
});
std::optional<std::pair<Symbol, Pos>> duplicate;
for (size_t i = 0; i + 1 < formals->formals.size(); i++) {
if (formals->formals[i].name != formals->formals[i + 1].name)
continue;
std::pair thisDup{formals->formals[i].name, formals->formals[i + 1].pos};
duplicate = std::min(thisDup, duplicate.value_or(thisDup));
}
if (duplicate)
throw ParseError({
.msg = hintfmt("duplicate formal function argument '%1%'",
formal.name),
.msg = hintfmt("duplicate formal function argument '%1%'", duplicate->first),
.errPos = duplicate->second
});
Formals result;
result.ellipsis = formals->ellipsis;
result.formals = std::move(formals->formals);
if (arg.set() && result.has(arg))
throw ParseError({
.msg = hintfmt("duplicate formal function argument '%1%'", arg),
.errPos = pos
});
formals->formals.push_front(formal);
delete formals;
return new Formals(std::move(result));
}
static Expr * stripIndentation(const Pos & pos, SymbolTable & symbols, vector<std::pair<Pos, Expr *> > & es)
static Expr * stripIndentation(const Pos & pos, SymbolTable & symbols,
vector<std::pair<Pos, std::variant<Expr *, StringToken> > > & es)
{
if (es.empty()) return new ExprString(symbols.create(""));
if (es.empty()) return new ExprString("");
/* Figure out the minimum indentation. Note that by design
whitespace-only final lines are not taken into account. (So
@ -164,20 +205,20 @@ static Expr * stripIndentation(const Pos & pos, SymbolTable & symbols, vector<st
size_t minIndent = 1000000;
size_t curIndent = 0;
for (auto & [i_pos, i] : es) {
ExprIndStr * e = dynamic_cast<ExprIndStr *>(i);
if (!e) {
/* Anti-quotations end the current start-of-line whitespace. */
auto * str = std::get_if<StringToken>(&i);
if (!str || !str->hasIndentation) {
/* Anti-quotations and escaped characters end the current start-of-line whitespace. */
if (atStartOfLine) {
atStartOfLine = false;
if (curIndent < minIndent) minIndent = curIndent;
}
continue;
}
for (size_t j = 0; j < e->s.size(); ++j) {
for (size_t j = 0; j < str->l; ++j) {
if (atStartOfLine) {
if (e->s[j] == ' ')
if (str->p[j] == ' ')
curIndent++;
else if (e->s[j] == '\n') {
else if (str->p[j] == '\n') {
/* Empty line, doesn't influence minimum
indentation. */
curIndent = 0;
@ -185,7 +226,7 @@ static Expr * stripIndentation(const Pos & pos, SymbolTable & symbols, vector<st
atStartOfLine = false;
if (curIndent < minIndent) minIndent = curIndent;
}
} else if (e->s[j] == '\n') {
} else if (str->p[j] == '\n') {
atStartOfLine = true;
curIndent = 0;
}
@ -197,33 +238,31 @@ static Expr * stripIndentation(const Pos & pos, SymbolTable & symbols, vector<st
atStartOfLine = true;
size_t curDropped = 0;
size_t n = es.size();
for (vector<std::pair<Pos, Expr *> >::iterator i = es.begin(); i != es.end(); ++i, --n) {
ExprIndStr * e = dynamic_cast<ExprIndStr *>(i->second);
if (!e) {
atStartOfLine = false;
curDropped = 0;
es2->push_back(*i);
continue;
}
auto i = es.begin();
const auto trimExpr = [&] (Expr * e) {
atStartOfLine = false;
curDropped = 0;
es2->emplace_back(i->first, e);
};
const auto trimString = [&] (const StringToken & t) {
string s2;
for (size_t j = 0; j < e->s.size(); ++j) {
for (size_t j = 0; j < t.l; ++j) {
if (atStartOfLine) {
if (e->s[j] == ' ') {
if (t.p[j] == ' ') {
if (curDropped++ >= minIndent)
s2 += e->s[j];
s2 += t.p[j];
}
else if (e->s[j] == '\n') {
else if (t.p[j] == '\n') {
curDropped = 0;
s2 += e->s[j];
s2 += t.p[j];
} else {
atStartOfLine = false;
curDropped = 0;
s2 += e->s[j];
s2 += t.p[j];
}
} else {
s2 += e->s[j];
if (e->s[j] == '\n') atStartOfLine = true;
s2 += t.p[j];
if (t.p[j] == '\n') atStartOfLine = true;
}
}
@ -235,7 +274,10 @@ static Expr * stripIndentation(const Pos & pos, SymbolTable & symbols, vector<st
s2 = string(s2, 0, p + 1);
}
es2->emplace_back(i->first, new ExprString(symbols.create(s2)));
es2->emplace_back(i->first, new ExprString(s2));
};
for (; i != es.end(); ++i, --n) {
std::visit(overloaded { trimExpr, trimString }, i->second);
}
/* If this is a single string, then don't do a concatenation. */
@ -270,15 +312,17 @@ void yyerror(YYLTYPE * loc, yyscan_t scanner, ParseData * data, const char * err
nix::Expr * e;
nix::ExprList * list;
nix::ExprAttrs * attrs;
nix::Formals * formals;
nix::ParserFormals * formals;
nix::Formal * formal;
nix::NixInt n;
nix::NixFloat nf;
const char * id; // !!! -> Symbol
char * path;
char * uri;
StringToken id; // !!! -> Symbol
StringToken path;
StringToken uri;
StringToken str;
std::vector<nix::AttrName> * attrNames;
std::vector<std::pair<nix::Pos, nix::Expr *> > * string_parts;
std::vector<std::pair<nix::Pos, std::variant<nix::Expr *, StringToken> > > * ind_string_parts;
}
%type <e> start expr expr_function expr_if expr_op
@ -288,11 +332,12 @@ void yyerror(YYLTYPE * loc, yyscan_t scanner, ParseData * data, const char * err
%type <formals> formals
%type <formal> formal
%type <attrNames> attrs attrpath
%type <string_parts> string_parts_interpolated ind_string_parts
%type <string_parts> string_parts_interpolated
%type <ind_string_parts> ind_string_parts
%type <e> path_start string_parts string_attr
%type <id> attr
%token <id> ID ATTRPATH
%token <e> STR IND_STR
%token <str> STR IND_STR
%token <n> INT
%token <nf> FLOAT
%token <path> PATH HPATH SPATH PATH_END
@ -325,11 +370,17 @@ expr_function
: ID ':' expr_function
{ $$ = new ExprLambda(CUR_POS, data->symbols.create($1), 0, $3); }
| '{' formals '}' ':' expr_function
{ $$ = new ExprLambda(CUR_POS, data->symbols.create(""), $2, $5); }
{ $$ = new ExprLambda(CUR_POS, data->symbols.create(""), toFormals(*data, $2), $5); }
| '{' formals '}' '@' ID ':' expr_function
{ $$ = new ExprLambda(CUR_POS, data->symbols.create($5), $2, $7); }
{
Symbol arg = data->symbols.create($5);
$$ = new ExprLambda(CUR_POS, arg, toFormals(*data, $2, CUR_POS, arg), $7);
}
| ID '@' '{' formals '}' ':' expr_function
{ $$ = new ExprLambda(CUR_POS, data->symbols.create($1), $4, $7); }
{
Symbol arg = data->symbols.create($1);
$$ = new ExprLambda(CUR_POS, arg, toFormals(*data, $4, CUR_POS, arg), $7);
}
| ASSERT expr ';' expr_function
{ $$ = new ExprAssert(CUR_POS, $2, $4); }
| WITH expr ';' expr_function
@ -398,7 +449,8 @@ expr_select
expr_simple
: ID {
if (strcmp($1, "__curPos") == 0)
std::string_view s = "__curPos";
if ($1.l == s.size() && strncmp($1.p, s.data(), s.size()) == 0)
$$ = new ExprPos(CUR_POS);
else
$$ = new ExprVar(CUR_POS, data->symbols.create($1));
@ -415,11 +467,11 @@ expr_simple
$$ = new ExprConcatStrings(CUR_POS, false, $2);
}
| SPATH {
string path($1 + 1, strlen($1) - 2);
string path($1.p + 1, $1.l - 2);
$$ = new ExprCall(CUR_POS,
new ExprVar(data->symbols.create("__findFile")),
{new ExprVar(data->symbols.create("__nixPath")),
new ExprString(data->symbols.create(path))});
new ExprString(path)});
}
| URI {
static bool noURLLiterals = settings.isExperimentalFeatureEnabled(Xp::NoUrlLiterals);
@ -428,7 +480,7 @@ expr_simple
.msg = hintfmt("URL literals are disabled"),
.errPos = CUR_POS
});
$$ = new ExprString(data->symbols.create($1));
$$ = new ExprString(string($1));
}
| '(' expr ')' { $$ = $2; }
/* Let expressions `let {..., body = ...}' are just desugared
@ -443,32 +495,33 @@ expr_simple
;
string_parts
: STR
: STR { $$ = new ExprString(string($1)); }
| string_parts_interpolated { $$ = new ExprConcatStrings(CUR_POS, true, $1); }
| { $$ = new ExprString(data->symbols.create("")); }
| { $$ = new ExprString(""); }
;
string_parts_interpolated
: string_parts_interpolated STR { $$ = $1; $1->emplace_back(makeCurPos(@2, data), $2); }
: string_parts_interpolated STR
{ $$ = $1; $1->emplace_back(makeCurPos(@2, data), new ExprString(string($2))); }
| string_parts_interpolated DOLLAR_CURLY expr '}' { $$ = $1; $1->emplace_back(makeCurPos(@2, data), $3); }
| DOLLAR_CURLY expr '}' { $$ = new vector<std::pair<Pos, Expr *> >; $$->emplace_back(makeCurPos(@1, data), $2); }
| STR DOLLAR_CURLY expr '}' {
$$ = new vector<std::pair<Pos, Expr *> >;
$$->emplace_back(makeCurPos(@1, data), $1);
$$->emplace_back(makeCurPos(@1, data), new ExprString(string($1)));
$$->emplace_back(makeCurPos(@2, data), $3);
}
;
path_start
: PATH {
Path path(absPath($1, data->basePath));
Path path(absPath({$1.p, $1.l}, data->basePath));
/* add back in the trailing '/' to the first segment */
if ($1[strlen($1)-1] == '/' && strlen($1) > 1)
if ($1.p[$1.l-1] == '/' && $1.l > 1)
path += "/";
$$ = new ExprPath(path);
}
| HPATH {
Path path(getHome() + string($1 + 1));
Path path(getHome() + string($1.p + 1, $1.l - 1));
$$ = new ExprPath(path);
}
;
@ -476,7 +529,7 @@ path_start
ind_string_parts
: ind_string_parts IND_STR { $$ = $1; $1->emplace_back(makeCurPos(@2, data), $2); }
| ind_string_parts DOLLAR_CURLY expr '}' { $$ = $1; $1->emplace_back(makeCurPos(@2, data), $3); }
| { $$ = new vector<std::pair<Pos, Expr *> >; }
| { $$ = new vector<std::pair<Pos, std::variant<Expr *, StringToken> > >; }
;
binds
@ -508,7 +561,7 @@ attrs
{ $$ = $1;
ExprString * str = dynamic_cast<ExprString *>($2);
if (str) {
$$->push_back(AttrName(str->s));
$$->push_back(AttrName(data->symbols.create(str->s)));
delete str;
} else
throw ParseError({
@ -525,7 +578,7 @@ attrpath
{ $$ = $1;
ExprString * str = dynamic_cast<ExprString *>($3);
if (str) {
$$->push_back(AttrName(str->s));
$$->push_back(AttrName(data->symbols.create(str->s)));
delete str;
} else
$$->push_back(AttrName($3));
@ -535,7 +588,7 @@ attrpath
{ $$ = new vector<AttrName>;
ExprString *str = dynamic_cast<ExprString *>($1);
if (str) {
$$->push_back(AttrName(str->s));
$$->push_back(AttrName(data->symbols.create(str->s)));
delete str;
} else
$$->push_back(AttrName($1));
@ -544,7 +597,7 @@ attrpath
attr
: ID { $$ = $1; }
| OR_KW { $$ = "or"; }
| OR_KW { $$ = {"or", 2}; }
;
string_attr
@ -559,13 +612,13 @@ expr_list
formals
: formal ',' formals
{ $$ = $3; addFormal(CUR_POS, $$, *$1); }
{ $$ = $3; $$->formals.push_back(*$1); }
| formal
{ $$ = new Formals; addFormal(CUR_POS, $$, *$1); $$->ellipsis = false; }
{ $$ = new ParserFormals; $$->formals.push_back(*$1); $$->ellipsis = false; }
|
{ $$ = new Formals; $$->ellipsis = false; }
{ $$ = new ParserFormals; $$->ellipsis = false; }
| ELLIPSIS
{ $$ = new Formals; $$->ellipsis = true; }
{ $$ = new ParserFormals; $$->ellipsis = true; }
;
formal
@ -590,8 +643,8 @@ formal
namespace nix {
Expr * EvalState::parse(const char * text, FileOrigin origin,
const Path & path, const Path & basePath, std::shared_ptr<StaticEnv> & staticEnv)
Expr * EvalState::parse(char * text, size_t length, FileOrigin origin,
const PathView path, const PathView basePath, std::shared_ptr<StaticEnv> & staticEnv)
{
yyscan_t scanner;
ParseData data(*this);
@ -610,7 +663,7 @@ Expr * EvalState::parse(const char * text, FileOrigin origin,
data.basePath = basePath;
yylex_init(&scanner);
yy_scan_string(text, scanner);
yy_scan_buffer(text, length, scanner);
int res = yyparse(scanner, &data);
yylex_destroy(scanner);
@ -656,26 +709,33 @@ Expr * EvalState::parseExprFromFile(const Path & path)
Expr * EvalState::parseExprFromFile(const Path & path, std::shared_ptr<StaticEnv> & staticEnv)
{
return parse(readFile(path).c_str(), foFile, path, dirOf(path), staticEnv);
auto buffer = readFile(path);
// readFile should have left some extra space for terminators
buffer.append("\0\0", 2);
return parse(buffer.data(), buffer.size(), foFile, path, dirOf(path), staticEnv);
}
Expr * EvalState::parseExprFromString(std::string_view s, const Path & basePath, std::shared_ptr<StaticEnv> & staticEnv)
Expr * EvalState::parseExprFromString(std::string s, const Path & basePath, std::shared_ptr<StaticEnv> & staticEnv)
{
return parse(s.data(), foString, "", basePath, staticEnv);
s.append("\0\0", 2);
return parse(s.data(), s.size(), foString, "", basePath, staticEnv);
}
Expr * EvalState::parseExprFromString(std::string_view s, const Path & basePath)
Expr * EvalState::parseExprFromString(std::string s, const Path & basePath)
{
return parseExprFromString(s, basePath, staticBaseEnv);
return parseExprFromString(std::move(s), basePath, staticBaseEnv);
}
Expr * EvalState::parseStdin()
{
//Activity act(*logger, lvlTalkative, format("parsing standard input"));
return parse(drainFD(0).data(), foStdin, "", absPath("."), staticBaseEnv);
auto buffer = drainFD(0);
// drainFD should have left some extra space for terminators
buffer.append("\0\0", 2);
return parse(buffer.data(), buffer.size(), foStdin, "", absPath("."), staticBaseEnv);
}
@ -695,24 +755,24 @@ void EvalState::addToSearchPath(const string & s)
}
Path EvalState::findFile(const string & path)
Path EvalState::findFile(const std::string_view path)
{
return findFile(searchPath, path);
}
Path EvalState::findFile(SearchPath & searchPath, const string & path, const Pos & pos)
Path EvalState::findFile(SearchPath & searchPath, const std::string_view path, const Pos & pos)
{
for (auto & i : searchPath) {
std::string suffix;
if (i.first.empty())
suffix = "/" + path;
suffix = concatStrings("/", path);
else {
auto s = i.first.size();
if (path.compare(0, s, i.first) != 0 ||
(path.size() > s && path[s] != '/'))
continue;
suffix = path.size() == s ? "" : "/" + string(path, s);
suffix = path.size() == s ? "" : concatStrings("/", path.substr(s));
}
auto r = resolveSearchPathElem(i);
if (!r.first) continue;
@ -721,7 +781,7 @@ Path EvalState::findFile(SearchPath & searchPath, const string & path, const Pos
}
if (hasPrefix(path, "nix/"))
return corepkgsPrefix + path.substr(4);
return concatStrings(corepkgsPrefix, path.substr(4));
throw ThrownError({
.msg = hintfmt(evalSettings.pureEval

718
src/libexpr/primops.cc
View file

File diff suppressed because it is too large Load diff

35
src/libexpr/primops/context.cc
View file

@ -7,8 +7,8 @@ namespace nix {
static void prim_unsafeDiscardStringContext(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
PathSet context;
string s = state.coerceToString(pos, *args[0], context);
mkString(v, s, PathSet());
auto s = state.coerceToString(pos, *args[0], context);
v.mkString(*s);
}
static RegisterPrimOp primop_unsafeDiscardStringContext("__unsafeDiscardStringContext", 1, prim_unsafeDiscardStringContext);
@ -18,7 +18,7 @@ static void prim_hasContext(EvalState & state, const Pos & pos, Value * * args,
{
PathSet context;
state.forceString(*args[0], context, pos);
mkBool(v, !context.empty());
v.mkBool(!context.empty());
}
static RegisterPrimOp primop_hasContext("__hasContext", 1, prim_hasContext);
@ -33,13 +33,13 @@ static RegisterPrimOp primop_hasContext("__hasContext", 1, prim_hasContext);
static void prim_unsafeDiscardOutputDependency(EvalState & state, const Pos & pos, Value * * args, Value & v)
{
PathSet context;
string s = state.coerceToString(pos, *args[0], context);
auto s = state.coerceToString(pos, *args[0], context);
PathSet context2;
for (auto & p : context)
context2.insert(p.at(0) == '=' ? string(p, 1) : p);
mkString(v, s, context2);
v.mkString(*s, context2);
}
static RegisterPrimOp primop_unsafeDiscardOutputDependency("__unsafeDiscardOutputDependency", 1, prim_unsafeDiscardOutputDependency);
@ -103,27 +103,26 @@ static void prim_getContext(EvalState & state, const Pos & pos, Value * * args,
}
}
state.mkAttrs(v, contextInfos.size());
auto attrs = state.buildBindings(contextInfos.size());
auto sPath = state.symbols.create("path");
auto sAllOutputs = state.symbols.create("allOutputs");
for (const auto & info : contextInfos) {
auto & infoVal = *state.allocAttr(v, state.symbols.create(info.first));
state.mkAttrs(infoVal, 3);
auto infoAttrs = state.buildBindings(3);
if (info.second.path)
mkBool(*state.allocAttr(infoVal, sPath), true);
infoAttrs.alloc(sPath).mkBool(true);
if (info.second.allOutputs)
mkBool(*state.allocAttr(infoVal, sAllOutputs), true);
infoAttrs.alloc(sAllOutputs).mkBool(true);
if (!info.second.outputs.empty()) {
auto & outputsVal = *state.allocAttr(infoVal, state.sOutputs);
auto & outputsVal = infoAttrs.alloc(state.sOutputs);
state.mkList(outputsVal, info.second.outputs.size());
size_t i = 0;
for (const auto & output : info.second.outputs)
mkString(*(outputsVal.listElems()[i++] = state.allocValue()), output);
for (const auto & [i, output] : enumerate(info.second.outputs))
(outputsVal.listElems()[i] = state.allocValue())->mkString(output);
}
infoVal.attrs->sort();
attrs.alloc(info.first).mkAttrs(infoAttrs);
}
v.attrs->sort();
v.mkAttrs(attrs);
}
static RegisterPrimOp primop_getContext("__getContext", 1, prim_getContext);
@ -182,12 +181,12 @@ static void prim_appendContext(EvalState & state, const Pos & pos, Value * * arg
}
for (auto elem : iter->value->listItems()) {
auto name = state.forceStringNoCtx(*elem, *iter->pos);
context.insert("!" + name + "!" + string(i.name));
context.insert(concatStrings("!", name, "!", i.name));
}
}
}
mkString(v, orig, context);
v.mkString(orig, context);
}
static RegisterPrimOp primop_appendContext("__appendContext", 2, prim_appendContext);

26
src/libexpr/primops/fetchMercurial.cc
View file

@ -12,7 +12,7 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
std::string url;
std::optional<Hash> rev;
std::optional<std::string> ref;
std::string name = "source";
std::string_view name = "source";
PathSet context;
state.forceValue(*args[0], pos);
@ -22,14 +22,14 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
state.forceAttrs(*args[0], pos);
for (auto & attr : *args[0]->attrs) {
string n(attr.name);
std::string_view n(attr.name);
if (n == "url")
url = state.coerceToString(*attr.pos, *attr.value, context, false, false);
url = state.coerceToString(*attr.pos, *attr.value, context, false, false).toOwned();
else if (n == "rev") {
// Ugly: unlike fetchGit, here the "rev" attribute can
// be both a revision or a branch/tag name.
auto value = state.forceStringNoCtx(*attr.value, *attr.pos);
if (std::regex_match(value, revRegex))
if (std::regex_match(value.begin(), value.end(), revRegex))
rev = Hash::parseAny(value, htSHA1);
else
ref = value;
@ -50,7 +50,7 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
});
} else
url = state.coerceToString(pos, *args[0], context, false, false);
url = state.coerceToString(pos, *args[0], context, false, false).toOwned();
// FIXME: git externals probably can be used to bypass the URI
// whitelist. Ah well.
@ -62,7 +62,7 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
fetchers::Attrs attrs;
attrs.insert_or_assign("type", "hg");
attrs.insert_or_assign("url", url.find("://") != std::string::npos ? url : "file://" + url);
attrs.insert_or_assign("name", name);
attrs.insert_or_assign("name", string(name));
if (ref) attrs.insert_or_assign("ref", *ref);
if (rev) attrs.insert_or_assign("rev", rev->gitRev());
auto input = fetchers::Input::fromAttrs(std::move(attrs));
@ -70,19 +70,19 @@ static void prim_fetchMercurial(EvalState & state, const Pos & pos, Value * * ar
// FIXME: use name
auto [tree, input2] = input.fetch(state.store);
state.mkAttrs(v, 8);
auto attrs2 = state.buildBindings(8);
auto storePath = state.store->printStorePath(tree.storePath);
mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
attrs2.alloc(state.sOutPath).mkString(storePath, {storePath});
if (input2.getRef())
mkString(*state.allocAttr(v, state.symbols.create("branch")), *input2.getRef());
attrs2.alloc("branch").mkString(*input2.getRef());
// Backward compatibility: set 'rev' to
// 0000000000000000000000000000000000000000 for a dirty tree.
auto rev2 = input2.getRev().value_or(Hash(htSHA1));
mkString(*state.allocAttr(v, state.symbols.create("rev")), rev2.gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), std::string(rev2.gitRev(), 0, 12));
attrs2.alloc("rev").mkString(rev2.gitRev());
attrs2.alloc("shortRev").mkString(rev2.gitRev().substr(0, 12));
if (auto revCount = input2.getRevCount())
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *revCount);
v.attrs->sort();
attrs2.alloc("revCount").mkInt(*revCount);
v.mkAttrs(attrs2);
state.allowPath(tree.storePath);
}

33
src/libexpr/primops/fetchTree.cc
View file

@ -21,49 +21,48 @@ void emitTreeAttrs(
{
assert(input.isImmutable());
state.mkAttrs(v, 8);
auto attrs = state.buildBindings(8);
auto storePath = state.store->printStorePath(tree.storePath);
mkString(*state.allocAttr(v, state.sOutPath), storePath, PathSet({storePath}));
attrs.alloc(state.sOutPath).mkString(storePath, {storePath});
// FIXME: support arbitrary input attributes.
auto narHash = input.getNarHash();
assert(narHash);
mkString(*state.allocAttr(v, state.symbols.create("narHash")),
narHash->to_string(SRI, true));
attrs.alloc("narHash").mkString(narHash->to_string(SRI, true));
if (input.getType() == "git")
mkBool(*state.allocAttr(v, state.symbols.create("submodules")),
attrs.alloc("submodules").mkBool(
fetchers::maybeGetBoolAttr(input.attrs, "submodules").value_or(false));
if (!forceDirty) {
if (auto rev = input.getRev()) {
mkString(*state.allocAttr(v, state.symbols.create("rev")), rev->gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), rev->gitShortRev());
attrs.alloc("rev").mkString(rev->gitRev());
attrs.alloc("shortRev").mkString(rev->gitShortRev());
} else if (emptyRevFallback) {
// Backwards compat for `builtins.fetchGit`: dirty repos return an empty sha1 as rev
auto emptyHash = Hash(htSHA1);
mkString(*state.allocAttr(v, state.symbols.create("rev")), emptyHash.gitRev());
mkString(*state.allocAttr(v, state.symbols.create("shortRev")), emptyHash.gitShortRev());
attrs.alloc("rev").mkString(emptyHash.gitRev());
attrs.alloc("shortRev").mkString(emptyHash.gitShortRev());
}
if (auto revCount = input.getRevCount())
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *revCount);
attrs.alloc("revCount").mkInt(*revCount);
else if (emptyRevFallback)
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), 0);
attrs.alloc("revCount").mkInt(0);
}
if (auto lastModified = input.getLastModified()) {
mkInt(*state.allocAttr(v, state.symbols.create("lastModified")), *lastModified);
mkString(*state.allocAttr(v, state.symbols.create("lastModifiedDate")),
attrs.alloc("lastModified").mkInt(*lastModified);
attrs.alloc("lastModifiedDate").mkString(
fmt("%s", std::put_time(std::gmtime(&*lastModified), "%Y%m%d%H%M%S")));
}
v.attrs->sort();
v.mkAttrs(attrs);
}
std::string fixURI(std::string uri, EvalState & state, const std::string & defaultScheme = "file")
@ -126,7 +125,7 @@ static void fetchTree(
if (attr.name == state.sType) continue;
state.forceValue(*attr.value, *attr.pos);
if (attr.value->type() == nPath || attr.value->type() == nString) {
auto s = state.coerceToString(*attr.pos, *attr.value, context, false, false);
auto s = state.coerceToString(*attr.pos, *attr.value, context, false, false).toOwned();
attrs.emplace(attr.name,
attr.name == "url"
? type == "git"
@ -152,7 +151,7 @@ static void fetchTree(
input = fetchers::Input::fromAttrs(std::move(attrs));
} else {
auto url = state.coerceToString(pos, *args[0], context, false, false);
auto url = state.coerceToString(pos, *args[0], context, false, false).toOwned();
if (type == "git") {
fetchers::Attrs attrs;
@ -248,7 +247,7 @@ static void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
state.allowPath(storePath);
auto path = state.store->printStorePath(storePath);
mkString(v, path, PathSet({path}));
v.mkString(path, PathSet({path}));
}
static void prim_fetchurl(EvalState & state, const Pos & pos, Value * * args, Value & v)

23
src/libexpr/primops/fromTOML.cc
View file

@ -9,7 +9,7 @@ static void prim_fromTOML(EvalState & state, const Pos & pos, Value * * args, Va
{
auto toml = state.forceStringNoCtx(*args[0], pos);
std::istringstream tomlStream(toml);
std::istringstream tomlStream(string{toml});
std::function<void(Value &, toml::value)> visit;
@ -24,15 +24,12 @@ static void prim_fromTOML(EvalState & state, const Pos & pos, Value * * args, Va
size_t size = 0;
for (auto & i : table) { (void) i; size++; }
state.mkAttrs(v, size);
auto attrs = state.buildBindings(size);
for(auto & elem: table) {
for(auto & elem : table)
visit(attrs.alloc(elem.first), elem.second);
auto & v2 = *state.allocAttr(v, state.symbols.create(elem.first));
visit(v2, elem.second);
}
v.attrs->sort();
v.mkAttrs(attrs);
}
break;;
case toml::value_t::array:
@ -46,16 +43,16 @@ static void prim_fromTOML(EvalState & state, const Pos & pos, Value * * args, Va
}
break;;
case toml::value_t::boolean:
mkBool(v, toml::get<bool>(t));
v.mkBool(toml::get<bool>(t));
break;;
case toml::value_t::integer:
mkInt(v, toml::get<int64_t>(t));
v.mkInt(toml::get<int64_t>(t));
break;;
case toml::value_t::floating:
mkFloat(v, toml::get<NixFloat>(t));
v.mkFloat(toml::get<NixFloat>(t));
break;;
case toml::value_t::string:
mkString(v, toml::get<std::string>(t));
v.mkString(toml::get<std::string>(t));
break;;
case toml::value_t::local_datetime:
case toml::value_t::offset_datetime:
@ -65,7 +62,7 @@ static void prim_fromTOML(EvalState & state, const Pos & pos, Value * * args, Va
throw std::runtime_error("Dates and times are not supported");
break;;
case toml::value_t::empty:
mkNull(v);
v.mkNull();
break;;
}

21
src/libexpr/symbol-table.hh
View file

@ -1,7 +1,8 @@
#pragma once
#include <list>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include "types.hh"
@ -70,15 +71,21 @@ public:
class SymbolTable
{
private:
typedef std::unordered_set<string> Symbols;
Symbols symbols;
std::unordered_map<std::string_view, Symbol> symbols;
std::list<string> store;
public:
Symbol create(std::string_view s)
{
// FIXME: avoid allocation if 's' already exists in the symbol table.
std::pair<Symbols::iterator, bool> res = symbols.emplace(std::string(s));
return Symbol(&*res.first);
// Most symbols are looked up more than once, so we trade off insertion performance
// for lookup performance.
// TODO: could probably be done more efficiently with transparent Hash and Equals
// on the original implementation using unordered_set
auto it = symbols.find(s);
if (it != symbols.end()) return it->second;
const string & rawSym = store.emplace_back(s);
return symbols.emplace(rawSym, Symbol(&rawSym)).first->second;
}
size_t size() const
@ -91,7 +98,7 @@ public:
template<typename T>
void dump(T callback)
{
for (auto & s : symbols)
for (auto & s : store)
callback(s);
}
};

2
src/libexpr/value-to-xml.cc
View file

@ -142,7 +142,7 @@ static void printValueAsXML(EvalState & state, bool strict, bool location,
if (!v.lambda.fun->arg.empty()) attrs["name"] = v.lambda.fun->arg;
if (v.lambda.fun->formals->ellipsis) attrs["ellipsis"] = "1";
XMLOpenElement _(doc, "attrspat", attrs);
for (auto & i : v.lambda.fun->formals->formals)
for (auto & i : v.lambda.fun->formals->lexicographicOrder())
doc.writeEmptyElement("attr", singletonAttrs("name", i.name));
} else
doc.writeEmptyElement("varpat", singletonAttrs("name", v.lambda.fun->arg));

58
src/libexpr/value.hh
View file

@ -10,6 +10,8 @@
namespace nix {
class BindingsBuilder;
typedef enum {
tInt = 1,
@ -235,6 +237,17 @@ public:
string.context = context;
}
void mkString(std::string_view s);
void mkString(std::string_view s, const PathSet & context);
void mkStringMove(const char * s, const PathSet & context);
inline void mkString(const Symbol & s)
{
mkString(((const std::string &) s).c_str());
}
inline void mkPath(const char * s)
{
clearValue();
@ -242,6 +255,8 @@ public:
path = s;
}
void mkPath(std::string_view s);
inline void mkNull()
{
clearValue();
@ -255,6 +270,8 @@ public:
attrs = a;
}
Value & mkAttrs(BindingsBuilder & bindings);
inline void mkList(size_t size)
{
clearValue();
@ -344,7 +361,7 @@ public:
return internalType == tList1 ? 1 : internalType == tList2 ? 2 : bigList.size;
}
Pos determinePos(const Pos &pos) const;
Pos determinePos(const Pos & pos) const;
/* Check whether forcing this value requires a trivial amount of
computation. In particular, function applications are
@ -383,45 +400,6 @@ public:
};
// TODO: Remove these static functions, replace call sites with v.mk* instead
static inline void mkInt(Value & v, NixInt n)
{
v.mkInt(n);
}
static inline void mkFloat(Value & v, NixFloat n)
{
v.mkFloat(n);
}
static inline void mkBool(Value & v, bool b)
{
v.mkBool(b);
}
static inline void mkNull(Value & v)
{
v.mkNull();
}
static inline void mkApp(Value & v, Value & left, Value & right)
{
v.mkApp(&left, &right);
}
static inline void mkString(Value & v, const Symbol & s)
{
v.mkString(((const string &) s).c_str());
}
void mkString(Value & v, const char * s);
void mkPath(Value & v, const char * s);
#if HAVE_BOEHMGC
typedef std::vector<Value *, traceable_allocator<Value *> > ValueVector;
typedef std::map<Symbol, Value *, std::less<Symbol>, traceable_allocator<std::pair<const Symbol, Value *> > > ValueMap;

10
src/libfetchers/tarball.cc
View file

@ -67,18 +67,18 @@ DownloadFileResult downloadFile(
storePath = std::move(cached->storePath);
} else {
StringSink sink;
dumpString(*res.data, sink);
auto hash = hashString(htSHA256, *res.data);
dumpString(res.data, sink);
auto hash = hashString(htSHA256, res.data);
ValidPathInfo info {
store->makeFixedOutputPath(FileIngestionMethod::Flat, hash, name),
hashString(htSHA256, *sink.s),
hashString(htSHA256, sink.s),
};
info.narSize = sink.s->size();
info.narSize = sink.s.size();
info.ca = FixedOutputHash {
.method = FileIngestionMethod::Flat,
.hash = hash,
};
auto source = StringSource { *sink.s };
auto source = StringSource(sink.s);
store->addToStore(info, source, NoRepair, NoCheckSigs);
storePath = std::move(info.path);
}

42
src/libstore/binary-cache-store.cc
View file

@ -31,7 +31,7 @@ BinaryCacheStore::BinaryCacheStore(const Params & params)
StringSink sink;
sink << narVersionMagic1;
narMagic = *sink.s;
narMagic = sink.s;
}
void BinaryCacheStore::init()
@ -68,7 +68,7 @@ void BinaryCacheStore::upsertFile(const std::string & path,
}
void BinaryCacheStore::getFile(const std::string & path,
Callback<std::shared_ptr<std::string>> callback) noexcept
Callback<std::optional<std::string>> callback) noexcept
{
try {
callback(getFile(path));
@ -77,9 +77,9 @@ void BinaryCacheStore::getFile(const std::string & path,
void BinaryCacheStore::getFile(const std::string & path, Sink & sink)
{
std::promise<std::shared_ptr<std::string>> promise;
std::promise<std::optional<std::string>> promise;
getFile(path,
{[&](std::future<std::shared_ptr<std::string>> result) {
{[&](std::future<std::optional<std::string>> result) {
try {
promise.set_value(result.get());
} catch (...) {
@ -89,15 +89,15 @@ void BinaryCacheStore::getFile(const std::string & path, Sink & sink)
sink(*promise.get_future().get());
}
std::shared_ptr<std::string> BinaryCacheStore::getFile(const std::string & path)
std::optional<std::string> BinaryCacheStore::getFile(const std::string & path)
{
StringSink sink;
try {
getFile(path, sink);
} catch (NoSuchBinaryCacheFile &) {
return nullptr;
return std::nullopt;
}
return sink.s;
return std::move(sink.s);
}
std::string BinaryCacheStore::narInfoFileFor(const StorePath & storePath)
@ -367,11 +367,11 @@ void BinaryCacheStore::queryPathInfoUncached(const StorePath & storePath,
auto callbackPtr = std::make_shared<decltype(callback)>(std::move(callback));
getFile(narInfoFile,
{[=](std::future<std::shared_ptr<std::string>> fut) {
{[=](std::future<std::optional<std::string>> fut) {
try {
auto data = fut.get();
if (!data) return (*callbackPtr)(nullptr);
if (!data) return (*callbackPtr)({});
stats.narInfoRead++;
@ -429,7 +429,7 @@ StorePath BinaryCacheStore::addTextToStore(const string & name, const string & s
StringSink sink;
dumpString(s, sink);
auto source = StringSource { *sink.s };
StringSource source(sink.s);
return addToStoreCommon(source, repair, CheckSigs, [&](HashResult nar) {
ValidPathInfo info { path, nar.first };
info.narSize = nar.second;
@ -446,11 +446,11 @@ void BinaryCacheStore::queryRealisationUncached(const DrvOutput & id,
auto callbackPtr = std::make_shared<decltype(callback)>(std::move(callback));
Callback<std::shared_ptr<std::string>> newCallback = {
[=](std::future<std::shared_ptr<std::string>> fut) {
Callback<std::optional<std::string>> newCallback = {
[=](std::future<std::optional<std::string>> fut) {
try {
auto data = fut.get();
if (!data) return (*callbackPtr)(nullptr);
if (!data) return (*callbackPtr)({});
auto realisation = Realisation::fromJSON(
nlohmann::json::parse(*data), outputInfoFilePath);
@ -490,7 +490,7 @@ void BinaryCacheStore::addSignatures(const StorePath & storePath, const StringSe
writeNarInfo(narInfo);
}
std::shared_ptr<std::string> BinaryCacheStore::getBuildLog(const StorePath & path)
std::optional<std::string> BinaryCacheStore::getBuildLog(const StorePath & path)
{
auto drvPath = path;
@ -498,10 +498,10 @@ std::shared_ptr<std::string> BinaryCacheStore::getBuildLog(const StorePath & pat
try {
auto info = queryPathInfo(path);
// FIXME: add a "Log" field to .narinfo
if (!info->deriver) return nullptr;
if (!info->deriver) return std::nullopt;
drvPath = *info->deriver;
} catch (InvalidPath &) {
return nullptr;
return std::nullopt;
}
}
@ -512,4 +512,14 @@ std::shared_ptr<std::string> BinaryCacheStore::getBuildLog(const StorePath & pat
return getFile(logPath);
}
void BinaryCacheStore::addBuildLog(const StorePath & drvPath, std::string_view log)
{
assert(drvPath.isDerivation());
upsertFile(
"log/" + std::string(drvPath.to_string()),
(std::string) log, // FIXME: don't copy
"text/plain; charset=utf-8");
}
}

12
src/libstore/binary-cache-store.hh
View file

@ -51,6 +51,7 @@ public:
const std::string & mimeType) = 0;
void upsertFile(const std::string & path,
// FIXME: use std::string_view
std::string && data,
const std::string & mimeType);
@ -62,10 +63,11 @@ public:
/* Fetch the specified file and call the specified callback with
the result. A subclass may implement this asynchronously. */
virtual void getFile(const std::string & path,
Callback<std::shared_ptr<std::string>> callback) noexcept;
virtual void getFile(
const std::string & path,
Callback<std::optional<std::string>> callback) noexcept;
std::shared_ptr<std::string> getFile(const std::string & path);
std::optional<std::string> getFile(const std::string & path);
public:
@ -117,7 +119,9 @@ public:
void addSignatures(const StorePath & storePath, const StringSet & sigs) override;
std::shared_ptr<std::string> getBuildLog(const StorePath & path) override;
std::optional<std::string> getBuildLog(const StorePath & path) override;
void addBuildLog(const StorePath & drvPath, std::string_view log) override;
};

4
src/libstore/build/derivation-goal.cc
View file

@ -194,7 +194,7 @@ void DerivationGoal::loadDerivation()
assert(worker.evalStore.isValidPath(drvPath));
/* Get the derivation. */
drv = std::make_unique<Derivation>(worker.evalStore.derivationFromPath(drvPath));
drv = std::make_unique<Derivation>(worker.evalStore.readDerivation(drvPath));
haveDerivation();
}
@ -278,7 +278,7 @@ void DerivationGoal::outputsSubstitutionTried()
if (nrFailed > 0 && nrFailed > nrNoSubstituters + nrIncompleteClosure && !settings.tryFallback) {
done(BuildResult::TransientFailure,
fmt("some substitutes for the outputs of derivation '%s' failed (usually happens due to networking issues); try '--fallback' to build derivation from source ",
Error("some substitutes for the outputs of derivation '%s' failed (usually happens due to networking issues); try '--fallback' to build derivation from source ",
worker.store.printStorePath(drvPath)));
return;
}

17
src/libstore/build/local-derivation-goal.cc
View file

@ -260,6 +260,7 @@ void LocalDerivationGoal::cleanupHookFinally()
void LocalDerivationGoal::cleanupPreChildKill()
{
sandboxMountNamespace = -1;
sandboxUserNamespace = -1;
}
@ -906,11 +907,14 @@ void LocalDerivationGoal::startBuilder()
"nobody:x:65534:65534:Nobody:/:/noshell\n",
sandboxUid(), sandboxGid(), settings.sandboxBuildDir));
/* Save the mount namespace of the child. We have to do this
/* Save the mount- and user namespace of the child. We have to do this
*before* the child does a chroot. */
sandboxMountNamespace = open(fmt("/proc/%d/ns/mnt", (pid_t) pid).c_str(), O_RDONLY);
if (sandboxMountNamespace.get() == -1)
throw SysError("getting sandbox mount namespace");
sandboxUserNamespace = open(fmt("/proc/%d/ns/user", (pid_t) pid).c_str(), O_RDONLY);
if (sandboxUserNamespace.get() == -1)
throw SysError("getting sandbox user namespace");
/* Signal the builder that we've updated its user namespace. */
writeFull(userNamespaceSync.writeSide.get(), "1");
@ -1438,6 +1442,9 @@ void LocalDerivationGoal::addDependency(const StorePath & path)
child process.*/
Pid child(startProcess([&]() {
if (usingUserNamespace && (setns(sandboxUserNamespace.get(), 0) == -1))
throw SysError("entering sandbox user namespace");
if (setns(sandboxMountNamespace.get(), 0) == -1)
throw SysError("entering sandbox mount namespace");
@ -2219,8 +2226,8 @@ void LocalDerivationGoal::registerOutputs()
StringSink sink;
dumpPath(actualPath, sink);
deletePath(actualPath);
sink.s = make_ref<std::string>(rewriteStrings(*sink.s, outputRewrites));
StringSource source(*sink.s);
sink.s = rewriteStrings(sink.s, outputRewrites);
StringSource source(sink.s);
restorePath(actualPath, source);
}
};
@ -2288,7 +2295,7 @@ void LocalDerivationGoal::registerOutputs()
StringSink sink;
dumpPath(actualPath, sink);
RewritingSink rsink2(oldHashPart, std::string(finalPath.hashPart()), nextSink);
rsink2(*sink.s);
rsink2(sink.s);
rsink2.flush();
});
Path tmpPath = actualPath + ".tmp";
@ -2460,7 +2467,7 @@ void LocalDerivationGoal::registerOutputs()
}
if (curRound == nrRounds) {
localStore.optimisePath(actualPath); // FIXME: combine with scanForReferences()
localStore.optimisePath(actualPath, NoRepair); // FIXME: combine with scanForReferences()
worker.markContentsGood(newInfo.path);
}

3
src/libstore/build/local-derivation-goal.hh
View file

@ -27,9 +27,10 @@ struct LocalDerivationGoal : public DerivationGoal
/* Pipe for synchronising updates to the builder namespaces. */
Pipe userNamespaceSync;
/* The mount namespace of the builder, used to add additional
/* The mount namespace and user namespace of the builder, used to add additional
paths to the sandbox as a result of recursive Nix calls. */
AutoCloseFD sandboxMountNamespace;
AutoCloseFD sandboxUserNamespace;
/* On Linux, whether we're doing the build in its own user
namespace. */

4
src/libstore/build/substitution-goal.cc
View file

@ -138,8 +138,8 @@ void PathSubstitutionGoal::tryNext()
only after we've downloaded the path. */
if (!sub->isTrusted && worker.store.pathInfoIsUntrusted(*info))
{
warn("substituter '%s' does not have a valid signature for path '%s'",
sub->getUri(), worker.store.printStorePath(storePath));
warn("the substitute for '%s' from '%s' is not signed by any of the keys in 'trusted-public-keys'",
worker.store.printStorePath(storePath), sub->getUri());
tryNext();
return;
}

46
src/libstore/daemon.cc
View file

@ -69,7 +69,7 @@ struct TunnelLogger : public Logger
StringSink buf;
buf << STDERR_NEXT << (fs.s + "\n");
enqueueMsg(*buf.s);
enqueueMsg(buf.s);
}
void logEI(const ErrorInfo & ei) override
@ -81,7 +81,7 @@ struct TunnelLogger : public Logger
StringSink buf;
buf << STDERR_NEXT << oss.str();
enqueueMsg(*buf.s);
enqueueMsg(buf.s);
}
/* startWork() means that we're starting an operation for which we
@ -129,7 +129,7 @@ struct TunnelLogger : public Logger
StringSink buf;
buf << STDERR_START_ACTIVITY << act << lvl << type << s << fields << parent;
enqueueMsg(*buf.s);
enqueueMsg(buf.s);
}
void stopActivity(ActivityId act) override
@ -137,7 +137,7 @@ struct TunnelLogger : public Logger
if (GET_PROTOCOL_MINOR(clientVersion) < 20) return;
StringSink buf;
buf << STDERR_STOP_ACTIVITY << act;
enqueueMsg(*buf.s);
enqueueMsg(buf.s);
}
void result(ActivityId act, ResultType type, const Fields & fields) override
@ -145,7 +145,7 @@ struct TunnelLogger : public Logger
if (GET_PROTOCOL_MINOR(clientVersion) < 20) return;
StringSink buf;
buf << STDERR_RESULT << act << type << fields;
enqueueMsg(*buf.s);
enqueueMsg(buf.s);
}
};
@ -468,10 +468,12 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
dontCheckSigs = false;
logger->startWork();
FramedSource source(from);
store->addMultipleToStore(source,
RepairFlag{repair},
dontCheckSigs ? NoCheckSigs : CheckSigs);
{
FramedSource source(from);
store->addMultipleToStore(source,
RepairFlag{repair},
dontCheckSigs ? NoCheckSigs : CheckSigs);
}
logger->stopWork();
break;
}
@ -852,14 +854,14 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
else {
std::unique_ptr<Source> source;
StringSink saved;
if (GET_PROTOCOL_MINOR(clientVersion) >= 21)
source = std::make_unique<TunnelSource>(from, to);
else {
StringSink saved;
TeeSource tee { from, saved };
ParseSink ether;
parseDump(ether, tee);
source = std::make_unique<StringSource>(std::move(*saved.s));
source = std::make_unique<StringSource>(saved.s);
}
logger->startWork();
@ -920,6 +922,22 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
break;
}
case wopAddBuildLog: {
StorePath path{readString(from)};
logger->startWork();
if (!trusted)
throw Error("you are not privileged to add logs");
{
FramedSource source(from);
StringSink sink;
source.drainInto(sink);
store->addBuildLog(path, sink.s);
}
logger->stopWork();
to << 1;
break;
}
default:
throw Error("invalid operation %1%", op);
}
@ -963,7 +981,11 @@ void processConnection(
readInt(from);
}
readInt(from); // obsolete reserveSpace
if (GET_PROTOCOL_MINOR(clientVersion) >= 11)
readInt(from); // obsolete reserveSpace
if (GET_PROTOCOL_MINOR(clientVersion) >= 33)
to << nixVersion;
/* Send startup error messages to the client. */
tunnelLogger->startWork();

9
src/libstore/derivations.cc
View file

@ -4,6 +4,7 @@
#include "util.hh"
#include "worker-protocol.hh"
#include "fs-accessor.hh"
#include <boost/container/small_vector.hpp>
namespace nix {
@ -272,7 +273,9 @@ Derivation parseDerivation(const Store & store, std::string && s, std::string_vi
static void printString(string & res, std::string_view s)
{
char buf[s.size() * 2 + 2];
boost::container::small_vector<char, 64 * 1024> buffer;
buffer.reserve(s.size() * 2 + 2);
char * buf = buffer.data();
char * p = buf;
*p++ = '"';
for (auto c : s)
@ -696,10 +699,10 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr
}
std::string hashPlaceholder(const std::string & outputName)
std::string hashPlaceholder(const std::string_view outputName)
{
// FIXME: memoize?
return "/" + hashString(htSHA256, "nix-output:" + outputName).to_string(Base32, false);
return "/" + hashString(htSHA256, concatStrings("nix-output:", outputName)).to_string(Base32, false);
}
std::string downstreamPlaceholder(const Store & store, const StorePath & drvPath, std::string_view outputName)

2
src/libstore/derivations.hh
View file

@ -236,7 +236,7 @@ void writeDerivation(Sink & out, const Store & store, const BasicDerivation & dr
It is used as a placeholder to allow derivations to refer to their
own outputs without needing to use the hash of a derivation in
itself, making the hash near-impossible to calculate. */
std::string hashPlaceholder(const std::string & outputName);
std::string hashPlaceholder(const std::string_view outputName);
/* This creates an opaque and almost certainly unique string
deterministically from a derivation path and output name.

6
src/libstore/export-import.cc
View file

@ -75,20 +75,20 @@ StorePaths Store::importPaths(Source & source, CheckSigsFlag checkSigs)
auto references = worker_proto::read(*this, source, Phantom<StorePathSet> {});
auto deriver = readString(source);
auto narHash = hashString(htSHA256, *saved.s);
auto narHash = hashString(htSHA256, saved.s);
ValidPathInfo info { path, narHash };
if (deriver != "")
info.deriver = parseStorePath(deriver);
info.references = references;
info.narSize = saved.s->size();
info.narSize = saved.s.size();
// Ignore optional legacy signature.
if (readInt(source) == 1)
readString(source);
// Can't use underlying source, which would have been exhausted
auto source = StringSource { *saved.s };
auto source = StringSource(saved.s);
addToStore(info, source, NoRepair, checkSigs);
res.push_back(info.path);

20
src/libstore/filetransfer.cc
View file

@ -106,7 +106,7 @@ struct curlFileTransfer : public FileTransfer
this->request.dataCallback(data);
}
} else
this->result.data->append(data);
this->result.data.append(data);
})
{
if (!request.expectedETag.empty())
@ -195,7 +195,7 @@ struct curlFileTransfer : public FileTransfer
std::smatch match;
if (std::regex_match(line, match, statusLine)) {
result.etag = "";
result.data = std::make_shared<std::string>();
result.data.clear();
result.bodySize = 0;
statusMsg = trim(match[1]);
acceptRanges = false;
@ -340,7 +340,7 @@ struct curlFileTransfer : public FileTransfer
if (writtenToSink)
curl_easy_setopt(req, CURLOPT_RESUME_FROM_LARGE, writtenToSink);
result.data = std::make_shared<std::string>();
result.data.clear();
result.bodySize = 0;
}
@ -434,21 +434,21 @@ struct curlFileTransfer : public FileTransfer
attempt++;
std::shared_ptr<std::string> response;
std::optional<std::string> response;
if (errorSink)
response = errorSink->s;
response = std::move(errorSink->s);
auto exc =
code == CURLE_ABORTED_BY_CALLBACK && _isInterrupted
? FileTransferError(Interrupted, response, "%s of '%s' was interrupted", request.verb(), request.uri)
? FileTransferError(Interrupted, std::move(response), "%s of '%s' was interrupted", request.verb(), request.uri)
: httpStatus != 0
? FileTransferError(err,
response,
std::move(response),
fmt("unable to %s '%s': HTTP error %d ('%s')",
request.verb(), request.uri, httpStatus, statusMsg)
+ (code == CURLE_OK ? "" : fmt(" (curl error: %s)", curl_easy_strerror(code)))
)
: FileTransferError(err,
response,
std::move(response),
fmt("unable to %s '%s': %s (%d)",
request.verb(), request.uri, curl_easy_strerror(code), code));
@ -705,7 +705,7 @@ struct curlFileTransfer : public FileTransfer
FileTransferResult res;
if (!s3Res.data)
throw FileTransferError(NotFound, nullptr, "S3 object '%s' does not exist", request.uri);
res.data = s3Res.data;
res.data = std::move(*s3Res.data);
callback(std::move(res));
#else
throw nix::Error("cannot download '%s' because Nix is not built with S3 support", request.uri);
@ -859,7 +859,7 @@ void FileTransfer::download(FileTransferRequest && request, Sink & sink)
}
template<typename... Args>
FileTransferError::FileTransferError(FileTransfer::Error error, std::shared_ptr<string> response, const Args & ... args)
FileTransferError::FileTransferError(FileTransfer::Error error, std::optional<std::string> response, const Args & ... args)
: Error(args...), error(error), response(response)
{
const auto hf = hintfmt(args...);

8
src/libstore/filetransfer.hh
View file

@ -59,7 +59,7 @@ struct FileTransferRequest
unsigned int baseRetryTimeMs = 250;
ActivityId parentAct;
bool decompress = true;
std::shared_ptr<std::string> data;
std::optional<std::string> data;
std::string mimeType;
std::function<void(std::string_view data)> dataCallback;
@ -77,7 +77,7 @@ struct FileTransferResult
bool cached = false;
std::string etag;
std::string effectiveUri;
std::shared_ptr<std::string> data;
std::string data;
uint64_t bodySize = 0;
};
@ -119,10 +119,10 @@ class FileTransferError : public Error
{
public:
FileTransfer::Error error;
std::shared_ptr<string> response; // intentionally optional
std::optional<string> response; // intentionally optional
template<typename... Args>
FileTransferError(FileTransfer::Error error, std::shared_ptr<string> response, const Args & ... args);
FileTransferError(FileTransfer::Error error, std::optional<string> response, const Args & ... args);
virtual const char* sname() const override { return "FileTransferError"; }
};

7
src/libstore/globals.hh
View file

@ -966,6 +966,13 @@ public:
Setting<bool> acceptFlakeConfig{this, false, "accept-flake-config",
"Whether to accept nix configuration from a flake without prompting."};
Setting<std::string> commitLockFileSummary{
this, "", "commit-lockfile-summary",
R"(
The commit summary to use when committing changed flake lock files. If
empty, the summary is generated based on the action performed.
)"};
};

8
src/libstore/http-binary-cache-store.cc
View file

@ -126,7 +126,7 @@ protected:
const std::string & mimeType) override
{
auto req = makeRequest(path);
req.data = std::make_shared<string>(StreamToSourceAdapter(istream).drain());
req.data = StreamToSourceAdapter(istream).drain();
req.mimeType = mimeType;
try {
getFileTransfer()->upload(req);
@ -159,7 +159,7 @@ protected:
}
void getFile(const std::string & path,
Callback<std::shared_ptr<std::string>> callback) noexcept override
Callback<std::optional<std::string>> callback) noexcept override
{
checkEnabled();
@ -170,10 +170,10 @@ protected:
getFileTransfer()->enqueueFileTransfer(request,
{[callbackPtr, this](std::future<FileTransferResult> result) {
try {
(*callbackPtr)(result.get().data);
(*callbackPtr)(std::move(result.get().data));
} catch (FileTransferError & e) {
if (e.error == FileTransfer::NotFound || e.error == FileTransfer::Forbidden)
return (*callbackPtr)(std::shared_ptr<std::string>());
return (*callbackPtr)({});
maybeDisable();
callbackPtr->rethrow();
} catch (...) {

2
src/libstore/legacy-ssh-store.cc
View file

@ -94,7 +94,7 @@ struct LegacySSHStore : public virtual LegacySSHStoreConfig, public virtual Stor
conn->sshConn->in.close();
auto msg = conn->from.drain();
throw Error("'nix-store --serve' protocol mismatch from '%s', got '%s'",
host, chomp(*saved.s + msg));
host, chomp(saved.s + msg));
}
conn->remoteVersion = readInt(conn->from);
if (GET_PROTOCOL_MAJOR(conn->remoteVersion) != 0x200)

1
src/libstore/local-binary-cache-store.cc
View file

@ -96,6 +96,7 @@ void LocalBinaryCacheStore::init()
createDirs(binaryCacheDir + "/" + realisationsPrefix);
if (writeDebugInfo)
createDirs(binaryCacheDir + "/debuginfo");
createDirs(binaryCacheDir + "/log");
BinaryCacheStore::init();
}

16
src/libstore/local-fs-store.cc
View file

@ -87,34 +87,32 @@ void LocalFSStore::narFromPath(const StorePath & path, Sink & sink)
const string LocalFSStore::drvsLogDir = "drvs";
std::shared_ptr<std::string> LocalFSStore::getBuildLog(const StorePath & path_)
std::optional<std::string> LocalFSStore::getBuildLog(const StorePath & path_)
{
auto path = path_;
if (!path.isDerivation()) {
try {
auto info = queryPathInfo(path);
if (!info->deriver) return nullptr;
if (!info->deriver) return std::nullopt;
path = *info->deriver;
} catch (InvalidPath &) {
return nullptr;
return std::nullopt;
}
}
auto baseName = std::string(baseNameOf(printStorePath(path)));
auto baseName = path.to_string();
for (int j = 0; j < 2; j++) {
Path logPath =
j == 0
? fmt("%s/%s/%s/%s", logDir, drvsLogDir, string(baseName, 0, 2), string(baseName, 2))
? fmt("%s/%s/%s/%s", logDir, drvsLogDir, baseName.substr(0, 2), baseName.substr(2))
: fmt("%s/%s/%s", logDir, drvsLogDir, baseName);
Path logBz2Path = logPath + ".bz2";
if (pathExists(logPath))
return std::make_shared<std::string>(readFile(logPath));
return readFile(logPath);
else if (pathExists(logBz2Path)) {
try {
@ -124,7 +122,7 @@ std::shared_ptr<std::string> LocalFSStore::getBuildLog(const StorePath & path_)
}
return nullptr;
return std::nullopt;
}
}

3
src/libstore/local-fs-store.hh
View file

@ -45,7 +45,8 @@ public:
return getRealStoreDir() + "/" + std::string(storePath, storeDir.size() + 1);
}
std::shared_ptr<std::string> getBuildLog(const StorePath & path) override;
std::optional<std::string> getBuildLog(const StorePath & path) override;
};
}

37
src/libstore/local-store.cc
View file

@ -9,6 +9,7 @@
#include "callback.hh"
#include "topo-sort.hh"
#include "finally.hh"
#include "compression.hh"
#include <iostream>
#include <algorithm>
@ -1307,7 +1308,7 @@ void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
canonicalisePathMetaData(realPath, -1);
optimisePath(realPath); // FIXME: combine with hashPath()
optimisePath(realPath, repair); // FIXME: combine with hashPath()
registerValidPath(info);
}
@ -1419,7 +1420,7 @@ StorePath LocalStore::addToStoreFromDump(Source & source0, const string & name,
canonicalisePathMetaData(realPath, -1); // FIXME: merge into restorePath
optimisePath(realPath);
optimisePath(realPath, repair);
ValidPathInfo info { dstPath, narHash.first };
info.narSize = narHash.second;
@ -1461,12 +1462,12 @@ StorePath LocalStore::addTextToStore(const string & name, const string & s,
StringSink sink;
dumpString(s, sink);
auto narHash = hashString(htSHA256, *sink.s);
auto narHash = hashString(htSHA256, sink.s);
optimisePath(realPath);
optimisePath(realPath, repair);
ValidPathInfo info { dstPath, narHash };
info.narSize = sink.s->size();
info.narSize = sink.s.size();
info.references = references;
info.ca = TextHash { .hash = hash };
registerValidPath(info);
@ -1898,4 +1899,30 @@ FixedOutputHash LocalStore::hashCAPath(
};
}
void LocalStore::addBuildLog(const StorePath & drvPath, std::string_view log)
{
assert(drvPath.isDerivation());
auto baseName = drvPath.to_string();
auto logPath = fmt("%s/%s/%s/%s.bz2", logDir, drvsLogDir, baseName.substr(0, 2), baseName.substr(2));
if (pathExists(logPath)) return;
createDirs(dirOf(logPath));
auto tmpFile = fmt("%s.tmp.%d", logPath, getpid());
writeFile(tmpFile, compress("bzip2", log));
if (rename(tmpFile.c_str(), logPath.c_str()) != 0)
throw SysError("renaming '%1%' to '%2%'", tmpFile, logPath);
}
std::optional<std::string> LocalStore::getVersion()
{
return nixVersion;
}
} // namespace nix

11
src/libstore/local-store.hh
View file

@ -172,8 +172,9 @@ public:
void optimiseStore() override;
/* Optimise a single store path. */
void optimisePath(const Path & path);
/* Optimise a single store path. Optionally, test the encountered
symlinks for corruption. */
void optimisePath(const Path & path, RepairFlag repair);
bool verifyStore(bool checkContents, RepairFlag repair) override;
@ -210,6 +211,8 @@ public:
void queryRealisationUncached(const DrvOutput&,
Callback<std::shared_ptr<const Realisation>> callback) noexcept override;
std::optional<std::string> getVersion() override;
private:
int getSchema();
@ -253,7 +256,7 @@ private:
InodeHash loadInodeHash();
Strings readDirectoryIgnoringInodes(const Path & path, const InodeHash & inodeHash);
void optimisePath_(Activity * act, OptimiseStats & stats, const Path & path, InodeHash & inodeHash);
void optimisePath_(Activity * act, OptimiseStats & stats, const Path & path, InodeHash & inodeHash, RepairFlag repair);
// Internal versions that are not wrapped in retry_sqlite.
bool isValidPath_(State & state, const StorePath & path);
@ -279,6 +282,8 @@ private:
const std::string_view pathHash
);
void addBuildLog(const StorePath & drvPath, std::string_view log) override;
friend struct LocalDerivationGoal;
friend struct PathSubstitutionGoal;
friend struct SubstitutionGoal;

24
src/libstore/names.cc
View file

@ -56,8 +56,8 @@ bool DrvName::matches(const DrvName & n)
}
string nextComponent(string::const_iterator & p,
const string::const_iterator end)
std::string_view nextComponent(std::string_view::const_iterator & p,
const std::string_view::const_iterator end)
{
/* Skip any dots and dashes (component separators). */
while (p != end && (*p == '.' || *p == '-')) ++p;
@ -67,18 +67,18 @@ string nextComponent(string::const_iterator & p,
/* If the first character is a digit, consume the longest sequence
of digits. Otherwise, consume the longest sequence of
non-digit, non-separator characters. */
string s;
auto s = p;
if (isdigit(*p))
while (p != end && isdigit(*p)) s += *p++;
while (p != end && isdigit(*p)) p++;
else
while (p != end && (!isdigit(*p) && *p != '.' && *p != '-'))
s += *p++;
p++;
return s;
return {s, size_t(p - s)};
}
static bool componentsLT(const string & c1, const string & c2)
static bool componentsLT(const std::string_view c1, const std::string_view c2)
{
auto n1 = string2Int<int>(c1);
auto n2 = string2Int<int>(c2);
@ -94,14 +94,14 @@ static bool componentsLT(const string & c1, const string & c2)
}
int compareVersions(const string & v1, const string & v2)
int compareVersions(const std::string_view v1, const std::string_view v2)
{
string::const_iterator p1 = v1.begin();
string::const_iterator p2 = v2.begin();
auto p1 = v1.begin();
auto p2 = v2.begin();
while (p1 != v1.end() || p2 != v2.end()) {
string c1 = nextComponent(p1, v1.end());
string c2 = nextComponent(p2, v2.end());
auto c1 = nextComponent(p1, v1.end());
auto c2 = nextComponent(p2, v2.end());
if (componentsLT(c1, c2)) return -1;
else if (componentsLT(c2, c1)) return 1;
}

6
src/libstore/names.hh
View file

@ -27,9 +27,9 @@ private:
typedef list<DrvName> DrvNames;
string nextComponent(string::const_iterator & p,
const string::const_iterator end);
int compareVersions(const string & v1, const string & v2);
std::string_view nextComponent(std::string_view::const_iterator & p,
const std::string_view::const_iterator end);
int compareVersions(const std::string_view v1, const std::string_view v2);
DrvNames drvNamesFromArgs(const Strings & opArgs);
}

8
src/libstore/nar-accessor.cc
View file

@ -28,7 +28,7 @@ struct NarMember
struct NarAccessor : public FSAccessor
{
std::shared_ptr<const std::string> nar;
std::optional<const std::string> nar;
GetNarBytes getNarBytes;
@ -104,7 +104,7 @@ struct NarAccessor : public FSAccessor
}
};
NarAccessor(ref<const std::string> nar) : nar(nar)
NarAccessor(std::string && _nar) : nar(_nar)
{
StringSource source(*nar);
NarIndexer indexer(*this, source);
@ -224,9 +224,9 @@ struct NarAccessor : public FSAccessor
}
};
ref<FSAccessor> makeNarAccessor(ref<const std::string> nar)
ref<FSAccessor> makeNarAccessor(std::string && nar)
{
return make_ref<NarAccessor>(nar);
return make_ref<NarAccessor>(std::move(nar));
}
ref<FSAccessor> makeNarAccessor(Source & source)

2
src/libstore/nar-accessor.hh
View file

@ -10,7 +10,7 @@ struct Source;
/* Return an object that provides access to the contents of a NAR
file. */
ref<FSAccessor> makeNarAccessor(ref<const std::string> nar);
ref<FSAccessor> makeNarAccessor(std::string && nar);
ref<FSAccessor> makeNarAccessor(Source & source);

40
src/libstore/optimise-store.cc
View file

@ -26,7 +26,7 @@ static void makeWritable(const Path & path)
struct MakeReadOnly
{
Path path;
MakeReadOnly(const Path & path) : path(path) { }
MakeReadOnly(const PathView path) : path(path) { }
~MakeReadOnly()
{
try {
@ -88,7 +88,7 @@ Strings LocalStore::readDirectoryIgnoringInodes(const Path & path, const InodeHa
void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
const Path & path, InodeHash & inodeHash)
const Path & path, InodeHash & inodeHash, RepairFlag repair)
{
checkInterrupt();
@ -110,7 +110,7 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
if (S_ISDIR(st.st_mode)) {
Strings names = readDirectoryIgnoringInodes(path, inodeHash);
for (auto & i : names)
optimisePath_(act, stats, path + "/" + i, inodeHash);
optimisePath_(act, stats, path + "/" + i, inodeHash, repair);
return;
}
@ -151,7 +151,20 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
/* Check if this is a known hash. */
Path linkPath = linksDir + "/" + hash.to_string(Base32, false);
retry:
/* Maybe delete the link, if it has been corrupted. */
if (pathExists(linkPath)) {
auto stLink = lstat(linkPath);
if (st.st_size != stLink.st_size
|| (repair && hash != hashPath(htSHA256, linkPath).first))
{
// XXX: Consider overwriting linkPath with our valid version.
warn("removing corrupted link '%s'", linkPath);
warn("There may be more corrupted paths."
"\nYou should run `nix-store --verify --check-contents --repair` to fix them all");
unlink(linkPath.c_str());
}
}
if (!pathExists(linkPath)) {
/* Nope, create a hard link in the links directory. */
if (link(path.c_str(), linkPath.c_str()) == 0) {
@ -187,23 +200,18 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
return;
}
if (st.st_size != stLink.st_size) {
warn("removing corrupted link '%s'", linkPath);
unlink(linkPath.c_str());
goto retry;
}
printMsg(lvlTalkative, format("linking '%1%' to '%2%'") % path % linkPath);
/* Make the containing directory writable, but only if it's not
the store itself (we don't want or need to mess with its
permissions). */
bool mustToggle = dirOf(path) != realStoreDir.get();
if (mustToggle) makeWritable(dirOf(path));
const Path dirOfPath(dirOf(path));
bool mustToggle = dirOfPath != realStoreDir.get();
if (mustToggle) makeWritable(dirOfPath);
/* When we're done, make the directory read-only again and reset
its timestamp back to 0. */
MakeReadOnly makeReadOnly(mustToggle ? dirOf(path) : "");
MakeReadOnly makeReadOnly(mustToggle ? dirOfPath : "");
Path tempLink = (format("%1%/.tmp-link-%2%-%3%")
% realStoreDir % getpid() % random()).str();
@ -260,7 +268,7 @@ void LocalStore::optimiseStore(OptimiseStats & stats)
if (!isValidPath(i)) continue; /* path was GC'ed, probably */
{
Activity act(*logger, lvlTalkative, actUnknown, fmt("optimising path '%s'", printStorePath(i)));
optimisePath_(&act, stats, realStoreDir + "/" + std::string(i.to_string()), inodeHash);
optimisePath_(&act, stats, realStoreDir + "/" + std::string(i.to_string()), inodeHash, NoRepair);
}
done++;
act.progress(done, paths.size());
@ -278,12 +286,12 @@ void LocalStore::optimiseStore()
stats.filesLinked);
}
void LocalStore::optimisePath(const Path & path)
void LocalStore::optimisePath(const Path & path, RepairFlag repair)
{
OptimiseStats stats;
InodeHash inodeHash;
if (settings.autoOptimiseStore) optimisePath_(nullptr, stats, path, inodeHash);
if (settings.autoOptimiseStore) optimisePath_(nullptr, stats, path, inodeHash, repair);
}

2
src/libstore/parsed-derivations.cc
View file

@ -170,7 +170,7 @@ std::string writeStructuredAttrsShell(const nlohmann::json & json)
auto handleSimpleType = [](const nlohmann::json & value) -> std::optional<std::string> {
if (value.is_string())
return shellEscape(value);
return shellEscape(value.get<std::string_view>());
if (value.is_number()) {
auto f = value.get<float>();

2
src/libstore/realisation.cc
View file

@ -78,7 +78,7 @@ Realisation Realisation::fromJSON(
auto fieldIterator = json.find(fieldName);
if (fieldIterator == json.end())
return std::nullopt;
return *fieldIterator;
return {*fieldIterator};
};
auto getField = [&](std::string fieldName) -> std::string {
if (auto field = getOptionalField(fieldName))

30
src/libstore/remote-fs-accessor.cc
View file

@ -22,9 +22,18 @@ Path RemoteFSAccessor::makeCacheFile(std::string_view hashPart, const std::strin
return fmt("%s/%s.%s", cacheDir, hashPart, ext);
}
void RemoteFSAccessor::addToCache(std::string_view hashPart, const std::string & nar,
ref<FSAccessor> narAccessor)
ref<FSAccessor> RemoteFSAccessor::addToCache(std::string_view hashPart, std::string && nar)
{
if (cacheDir != "") {
try {
/* FIXME: do this asynchronously. */
writeFile(makeCacheFile(hashPart, "nar"), nar);
} catch (...) {
ignoreException();
}
}
auto narAccessor = makeNarAccessor(std::move(nar));
nars.emplace(hashPart, narAccessor);
if (cacheDir != "") {
@ -33,14 +42,12 @@ void RemoteFSAccessor::addToCache(std::string_view hashPart, const std::string &
JSONPlaceholder jsonRoot(str);
listNar(jsonRoot, narAccessor, "", true);
writeFile(makeCacheFile(hashPart, "ls"), str.str());
/* FIXME: do this asynchronously. */
writeFile(makeCacheFile(hashPart, "nar"), nar);
} catch (...) {
ignoreException();
}
}
return narAccessor;
}
std::pair<ref<FSAccessor>, Path> RemoteFSAccessor::fetch(const Path & path_, bool requireValidPath)
@ -55,7 +62,6 @@ std::pair<ref<FSAccessor>, Path> RemoteFSAccessor::fetch(const Path & path_, boo
auto i = nars.find(std::string(storePath.hashPart()));
if (i != nars.end()) return {i->second, restPath};
StringSink sink;
std::string listing;
Path cacheFile;
@ -86,19 +92,15 @@ std::pair<ref<FSAccessor>, Path> RemoteFSAccessor::fetch(const Path & path_, boo
} catch (SysError &) { }
try {
*sink.s = nix::readFile(cacheFile);
auto narAccessor = makeNarAccessor(sink.s);
auto narAccessor = makeNarAccessor(nix::readFile(cacheFile));
nars.emplace(storePath.hashPart(), narAccessor);
return {narAccessor, restPath};
} catch (SysError &) { }
}
StringSink sink;
store->narFromPath(storePath, sink);
auto narAccessor = makeNarAccessor(sink.s);
addToCache(storePath.hashPart(), *sink.s, narAccessor);
return {narAccessor, restPath};
return {addToCache(storePath.hashPart(), std::move(sink.s)), restPath};
}
FSAccessor::Stat RemoteFSAccessor::stat(const Path & path)

3
src/libstore/remote-fs-accessor.hh
View file

@ -20,8 +20,7 @@ class RemoteFSAccessor : public FSAccessor
Path makeCacheFile(std::string_view hashPart, const std::string & ext);
void addToCache(std::string_view hashPart, const std::string & nar,
ref<FSAccessor> narAccessor);
ref<FSAccessor> addToCache(std::string_view hashPart, std::string && nar);
public:

28
src/libstore/remote-store.cc
View file

@ -172,7 +172,7 @@ void RemoteStore::initConnection(Connection & conn)
it. */
conn.closeWrite();
auto msg = conn.from.drain();
throw Error("protocol mismatch, got '%s'", chomp(*saved.s + msg));
throw Error("protocol mismatch, got '%s'", chomp(saved.s + msg));
}
conn.from >> conn.daemonVersion;
@ -188,7 +188,12 @@ void RemoteStore::initConnection(Connection & conn)
}
if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 11)
conn.to << false;
conn.to << false; // obsolete reserveSpace
if (GET_PROTOCOL_MINOR(conn.daemonVersion) >= 33) {
conn.to.flush();
conn.daemonNixVersion = readString(conn.from);
}
auto ex = conn.processStderr();
if (ex) std::rethrow_exception(ex);
@ -908,6 +913,25 @@ void RemoteStore::queryMissing(const std::vector<DerivedPath> & targets,
}
void RemoteStore::addBuildLog(const StorePath & drvPath, std::string_view log)
{
auto conn(getConnection());
conn->to << wopAddBuildLog << drvPath.to_string();
StringSource source(log);
conn.withFramedSink([&](Sink & sink) {
source.drainInto(sink);
});
readInt(conn->from);
}
std::optional<std::string> RemoteStore::getVersion()
{
auto conn(getConnection());
return conn->daemonNixVersion;
}
void RemoteStore::connect()
{
auto conn(getConnection());

5
src/libstore/remote-store.hh
View file

@ -116,6 +116,10 @@ public:
StorePathSet & willBuild, StorePathSet & willSubstitute, StorePathSet & unknown,
uint64_t & downloadSize, uint64_t & narSize) override;
void addBuildLog(const StorePath & drvPath, std::string_view log) override;
std::optional<std::string> getVersion() override;
void connect() override;
unsigned int getProtocol() override;
@ -127,6 +131,7 @@ public:
FdSink to;
FdSource from;
unsigned int daemonVersion;
std::optional<std::string> daemonNixVersion;
std::chrono::time_point<std::chrono::steady_clock> startTime;
virtual ~Connection();

2
src/libstore/s3-binary-cache-store.cc
View file

@ -385,7 +385,7 @@ struct S3BinaryCacheStoreImpl : virtual S3BinaryCacheStoreConfig, public virtual
auto compress = [&](std::string compression)
{
auto compressed = nix::compress(compression, StreamToSourceAdapter(istream).drain());
return std::make_shared<std::stringstream>(std::move(*compressed));
return std::make_shared<std::stringstream>(std::move(compressed));
};
if (narinfoCompression != "" && hasSuffix(path, ".narinfo"))

4
src/libstore/s3.hh
View file

@ -4,6 +4,8 @@
#include "ref.hh"
#include <optional>
namespace Aws { namespace Client { class ClientConfiguration; } }
namespace Aws { namespace S3 { class S3Client; } }
@ -20,7 +22,7 @@ struct S3Helper
struct FileTransferResult
{
std::shared_ptr<std::string> data;
std::optional<std::string> data;
unsigned int durationMs;
};

15
src/libstore/store-api.cc
View file

@ -1109,6 +1109,21 @@ void copyClosure(
copyPaths(srcStore, dstStore, closure, repair, checkSigs, substitute);
}
void copyClosure(
Store & srcStore,
Store & dstStore,
const StorePathSet & storePaths,
RepairFlag repair,
CheckSigsFlag checkSigs,
SubstituteFlag substitute)
{
if (&srcStore == &dstStore) return;
StorePathSet closure;
srcStore.computeFSClosure(storePaths, closure);
copyPaths(srcStore, dstStore, closure, repair, checkSigs, substitute);
}
std::optional<ValidPathInfo> decodeValidPathInfo(const Store & store, std::istream & str, std::optional<HashResult> hashGiven)
{
std::string path;

17
src/libstore/store-api.hh
View file

@ -724,8 +724,11 @@ public:
/* Return the build log of the specified store path, if available,
or null otherwise. */
virtual std::shared_ptr<std::string> getBuildLog(const StorePath & path)
{ return nullptr; }
virtual std::optional<std::string> getBuildLog(const StorePath & path)
{ return std::nullopt; }
virtual void addBuildLog(const StorePath & path, std::string_view log)
{ unsupported("addBuildLog"); }
/* Hack to allow long-running processes like hydra-queue-runner to
occasionally flush their path info cache. */
@ -762,6 +765,9 @@ public:
* (a no-op when there’s no daemon)
*/
virtual void setOptions() { }
virtual std::optional<std::string> getVersion() { return {}; }
protected:
Stats stats;
@ -812,6 +818,13 @@ void copyClosure(
CheckSigsFlag checkSigs = CheckSigs,
SubstituteFlag substitute = NoSubstitute);
void copyClosure(
Store & srcStore, Store & dstStore,
const StorePathSet & paths,
RepairFlag repair = NoRepair,
CheckSigsFlag checkSigs = CheckSigs,
SubstituteFlag substitute = NoSubstitute);
/* Remove the temporary roots file for this process. Any temporary
root becomes garbage after this point unless it has been registered
as a (permanent) root. */

3
src/libstore/worker-protocol.hh
View file

@ -9,7 +9,7 @@ namespace nix {
#define WORKER_MAGIC_1 0x6e697863
#define WORKER_MAGIC_2 0x6478696f
#define PROTOCOL_VERSION (1 << 8 | 32)
#define PROTOCOL_VERSION (1 << 8 | 33)
#define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
#define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)
@ -56,6 +56,7 @@ typedef enum {
wopRegisterDrvOutput = 42,
wopQueryRealisation = 43,
wopAddMultipleToStore = 44,
wopAddBuildLog = 45,
} WorkerOp;

5
src/libutil/archive.cc
View file

@ -93,13 +93,12 @@ static void dump(const Path & path, Sink & sink, PathFilter & filter)
debug(format("removing case hack suffix from '%1%'") % (path + "/" + i.name));
name.erase(pos);
}
if (unhacked.find(name) != unhacked.end())
if (!unhacked.emplace(name, i.name).second)
throw Error("file name collision in between '%1%' and '%2%'",
(path + "/" + unhacked[name]),
(path + "/" + i.name));
unhacked[name] = i.name;
} else
unhacked[i.name] = i.name;
unhacked.emplace(i.name, i.name);
for (auto & i : unhacked)
if (filter(path + "/" + i.first)) {

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