Commit graph

7441 commits

Author SHA1 Message Date
Tom Bereknyei
9b41239d8f fix: ensure apps are apps and packages are packages 2022-04-14 23:57:52 -04:00
Théophane Hufschmitt
646af7325d
Merge pull request #6376 from Uthar/master
don't assume that rev is a SHA1 hash
2022-04-08 17:56:27 +02:00
Eelco Dolstra
c68963eaea Remove duplicate "error:" 2022-04-08 11:48:30 +02:00
Eelco Dolstra
8bd9ebf52c Error: Remove unused sname() method 2022-04-08 11:31:51 +02:00
Eelco Dolstra
168ef9f3ab Remove unused Error.name field 2022-04-08 11:31:51 +02:00
Kasper Gałkowski
2c2fd4946f don't assume that rev is a SHA1 hash
This was a problem when writing a fetcher that uses e.g. sha256 hashes
for revisions. This doesn't actually do anything new, but allows for
creating such fetchers in the future (perhaps when support for Git's
SHA256 object format gains more popularity).
2022-04-07 19:49:47 +02:00
Eelco Dolstra
8b1e328d5d
Merge pull request #6348 from cole-h/fix-restoring-mount-namespace
libutil: Fix restoring mount namespace
2022-04-07 18:15:33 +02:00
Théophane Hufschmitt
b53e0a6aa0
Merge pull request #6374 from danpls/fix-actualUrl
libfetchers: Fix assertion
2022-04-07 17:57:24 +02:00
Rehno Lindeque
b9c969a866 nix flake check: Warn about deprecated nixosModule output 2022-04-06 12:20:39 -04:00
Daniel Pauls
1e1cd6e7a9 libfetchers: Fix assertion
The filter expects all paths to have a prefix of the raw `actualUrl`, but
`Store::addToStore(...)` provides absolute canonicalized paths.
To fix this create an absolute and canonicalized path from the `actualUrl` and
use it instead.

Fixes #6195.
2022-04-06 17:33:23 +02:00
Eelco Dolstra
318936366d Fix empty 'nix copy' error message
This was caused by SubstitutionGoal not setting the errorMsg field in
its BuildResult. We now get a more descriptive message than in 2.7.0, e.g.

  error: path '/nix/store/13mh...' is required, but there is no substituter that can build it

instead of the misleading (since there was no build)

  error: build of '/nix/store/13mh...' failed

Fixes #6295.
2022-04-06 12:43:53 +02:00
Eelco Dolstra
589f6f267b fetchClosure: Don't allow URL query parameters
Allowing this is a potential security hole, since it allows the user
to specify parameters like 'local-nar-cache'.
2022-04-06 11:52:51 +02:00
Eelco Dolstra
c0ad86f681
Merge pull request #6366 from danpls/base64-reserve
libutil: Reserve memory when en/decoding base64
2022-04-05 23:20:33 +02:00
Daniel Pauls
513652d594 tokenizeString: Fix semantic mistake
`string_view::find_first_not_of(...)` and
`string_view::find_first_of(...)` return `string_view::npos` on error
not `string::npos`.
2022-04-05 22:33:03 +02:00
Daniel Pauls
1fa0393479 libutil: Reserve memory when en/decoding base64
The size of the output when encoding to and decoding from base64 is
(roughly) known so we can allocate it in advance to prevent
reallocation.
2022-04-05 21:30:50 +02:00
Eelco Dolstra
27b952a8a1
Merge pull request #6362 from thufschmitt/verbose-doctor
doctor: Always show the output
2022-04-05 17:33:10 +02:00
Théophane Hufschmitt
9a640afc1e doctor: Always show the output
Fix https://github.com/NixOS/nix/issues/6342
2022-04-05 14:04:01 +02:00
Théophane Hufschmitt
5abe3f4aa6 Allow welcomeText when checking a flake template
Fix https://github.com/NixOS/nix/issues/6321
2022-04-05 11:03:43 +02:00
Cole Helbling
56009b2639 libutil: don't save cwd fd, use path instead
Saving the cwd fd didn't actually work well -- prior to this commit, the
following would happen:

    : ~/w/vc/nix ; doas outputs/out/bin/nix --experimental-features 'nix-command flakes' run nixpkgs#coreutils -- --coreutils-prog=pwd
    pwd: couldn't find directory entry in ‘../../../..’ with matching i-node
    : ~/w/vc/nix ; doas outputs/out/bin/nix --experimental-features 'nix-command flakes' develop -c pwd
    pwd: couldn't find directory entry in ‘../../../..’ with matching i-node
2022-04-04 10:28:08 -07:00
Cole Helbling
10b9c1b2b2 libutil: save cwd fd in restoreMountNamespace
This doesn't work very well (maybe I'm misunderstanding the desired
implementation):

    : ~/w/vc/nix ; doas outputs/out/bin/nix --experimental-features 'nix-command flakes' develop -c pwd
    pwd: couldn't find directory entry in ‘../../../..’ with matching i-node
2022-04-04 10:28:00 -07:00
Cole Helbling
f89b0f7846 libutil: try restoring the cwd from fdSavedCwd 2022-04-04 08:33:59 -07:00
Cole Helbling
e135d223f6 libutil: save fd to cwd instead of cwd itself 2022-04-04 08:32:45 -07:00
Cole Helbling
e5b70d47aa libutil: cleanup savedCwd logic
Co-authored-by: Eelco Dolstra <edolstra@gmail.com>
2022-04-04 08:20:11 -07:00
Eelco Dolstra
a4a1de69dc Add missing #include 2022-04-04 16:49:39 +02:00
Tom Bereknyei
c1e2ce4515 fix(run): set applyNixConfig lockFlag 2022-04-01 23:41:34 -04:00
Cole Helbling
2a45cf54e4 libutil: Properly guard self-allocating getcwd on GNU
It's a GNU extension, as pointed out by pennae.
2022-04-01 12:20:34 -07:00
Cole Helbling
7f5caaa7c0 libutil: Don't use std::filesystem
Just in case making libutil depend on std::filesystem is unacceptable,
here is the non-filesystem approach.
2022-04-01 10:24:31 -07:00
aszlig
435848cef1 libutil: Fix restoring mount namespace
I regularly pass around simple scripts by using nix-shell as the script
interpreter, eg. like this:

    #!/usr/bin/env nix-shell
    #!nix-shell -p dd_rescue coreutils bash -i bash

While this works most of the time, I recently had one occasion where it
would not and the above would result in the following:

    $ sudo ./myscript.sh
    bash: ./myscript.sh: No such file or directory

Note the "sudo" here, because this error only occurs if we're root.

The reason for the latter is because running Nix as root means that we
can directly access the store, which makes sure we use a filesystem
namespace to make the store writable. XXX - REWORD!

So when stracing the process, I stumbled on the following sequence:

    openat(AT_FDCWD, "/proc/self/ns/mnt", O_RDONLY) = 3
    unshare(CLONE_NEWNS)                            = 0
    ... later ...
    getcwd("/the/real/cwd", 4096)                   = 14
    setns(3, CLONE_NEWNS)                           = 0
    getcwd("/", 4096)                               = 2

In the whole strace output there are no calls to chdir() whatsoever, so
I decided to look into the kernel source to see what else could change
directories and found this[1]:

    /* Update the pwd and root */
    set_fs_pwd(fs, &root);
    set_fs_root(fs, &root);

The set_fs_pwd() call is roughly equivalent to a chdir() syscall and
this is called when the setns() syscall is invoked[2].

[1]: b14ffae378/fs/namespace.c (L4659)
[2]: b14ffae378/kernel/nsproxy.c (L346)
2022-04-01 09:30:52 -07:00
Eelco Dolstra
bf4895961d
Merge pull request #6344 from flox/profile_url_uri
profile!: consistent use of url/uri. create new version
2022-04-01 14:38:32 +02:00
Eelco Dolstra
fdfe737867 Fix handling of outputHash when outputHashAlgo is not specified
https://hydra.nixos.org/build/171351131
2022-04-01 12:40:49 +02:00
Eelco Dolstra
c9a29d0d92
Merge pull request #6227 from NixOS/impure-derivations-ng
Impure derivations
2022-03-31 19:58:35 +02:00
Eelco Dolstra
7537097284 Provide default values for outputHashAlgo and outputHashMode 2022-03-31 16:56:44 +02:00
Eelco Dolstra
a99af85a77 Fix macOS build 2022-03-31 16:39:18 +02:00
Eelco Dolstra
6051cc954b Rename 'pure' -> 'sandboxed' for consistency 2022-03-31 16:12:25 +02:00
Eelco Dolstra
e279fbb16a needsNetworkAccess() -> isSandboxed() 2022-03-31 16:06:40 +02:00
Eelco Dolstra
4e043c2f32 Document isPure() 2022-03-31 16:01:50 +02:00
Eelco Dolstra
d7fc33c842 Fix macOS build 2022-03-31 15:59:14 +02:00
Eelco Dolstra
18935e8b9f Support fixed-output derivations depending on impure derivations 2022-03-31 13:43:20 +02:00
Eelco Dolstra
5cd72598fe Add support for impure derivations
Impure derivations are derivations that can produce a different result
every time they're built. Example:

  stdenv.mkDerivation {
    name = "impure";
    __impure = true; # marks this derivation as impure
    outputHashAlgo = "sha256";
    outputHashMode = "recursive";
    buildCommand = "date > $out";
  };

Some important characteristics:

* This requires the 'impure-derivations' experimental feature.

* Impure derivations are not "cached". Thus, running "nix-build" on
  the example above multiple times will cause a rebuild every time.

* They are implemented similar to CA derivations, i.e. the output is
  moved to a content-addressed path in the store. The difference is
  that we don't register a realisation in the Nix database.

* Pure derivations are not allowed to depend on impure derivations. In
  the future fixed-output derivations will be allowed to depend on
  impure derivations, thus forming an "impurity barrier" in the
  dependency graph.

* When sandboxing is enabled, impure derivations can access the
  network in the same way as fixed-output derivations. In relaxed
  sandboxing mode, they can access the local filesystem.
2022-03-31 13:43:20 +02:00
Eelco Dolstra
0fe8849914
Merge pull request #6337 from danpls/fix-to-json-repl
libexpr: Throw the correct error in toJSON
2022-03-31 11:33:16 +02:00
Eelco Dolstra
28309352d9 replaceEnv(): Pass newEnv by reference 2022-03-31 10:39:53 +02:00
Tom Bereknyei
50f9f335c9 profile!: consistent use of url/uri. create new version 2022-03-30 16:35:26 -04:00
Tom Bereknyei
d77823b502 bundler: update default bundler to support new bundler API 2022-03-30 16:10:42 -04:00
Daniel Pauls
629edd43ba libutil: Change return value of addTrace to void
The return value of BaseError::addTrace(...) is never used and
error-prone as subclasses calling it will return a BaseError instead of
the subclass.
This commit changes its return value to be void.
2022-03-30 18:37:32 +02:00
Daniel Pauls
fa83b865a2 libexpr: Throw the correct error in toJSON
BaseError::addTrace(...) returns a BaseError, but we want to
throw a TypeError instead.

Fixes #6336.
2022-03-30 15:50:13 +02:00
Théophane Hufschmitt
390269ed87 Simplify the handling of the hash modulo
Rather than having four different but very similar types of hashes, make
only one, with a tag indicating whether it corresponds to a regular of
deferred derivation.

This implies a slight logical change: The original Nix+multiple-outputs
model assumed only one hash-modulo per derivation. Adding
multiple-outputs CA derivations changed this as these have one
hash-modulo per output. This change is now treating each derivation as
having one hash modulo per output.
This obviously means that we internally loose the guaranty that
all the outputs of input-addressed derivations have the same hash
modulo. But it turns out that it doesn’t matter because there’s nothing
in the code taking advantage of that fact (and it probably shouldn’t
anyways).

The upside is that it is now much easier to work with these hashes, and
we can get rid of a lot of useless `std::visit{ overloaded`.

Co-authored-by: John Ericson <John.Ericson@Obsidian.Systems>
2022-03-29 18:17:35 +02:00
Théophane Hufschmitt
2d572a250f
Merge pull request #6330 from edolstra/run-remote-store
nix {run,shell}: Print a better error message if the store is not local
2022-03-28 17:57:37 +02:00
Eelco Dolstra
b266fd53dd nix {run,shell}: Print a better error message if the store is not local
Closes #6317
2022-03-28 14:58:38 +02:00
Eelco Dolstra
057f9ee190 nix profile install: Don't use queryDerivationOutputMap()
Instead get the outputs from Installable::build(). This will also
allow 'nix profile install' to support impure derivations.

Fixes #6286.
2022-03-28 14:23:39 +02:00
Eelco Dolstra
1844172dd1
Merge pull request #6314 from edolstra/experimental-primop
Only provide builtins is the corresponding experimental feature is enabled
2022-03-25 16:16:31 +01:00