Commit graph

216 commits

Author SHA1 Message Date
Eelco Dolstra
26dacc0983 Add fetchTree builtin function
This allows all supported fetchers to be used, e.g.

  builtins.fetchTree {
    type = "github";
    owner = "NixOS";
    repo = "nix";
    rev = "d4df99a3349cf2228a8ee78dea320afef86eb3ba";
  }
2020-02-11 23:53:46 +01:00
Eelco Dolstra
887730aab3
Remove superfluous TreeInfo::rev field 2020-02-01 23:54:20 +01:00
Eelco Dolstra
8451298b35
Factor out TreeInfo 2020-02-01 22:06:55 +01:00
Eelco Dolstra
b33b94748c Convert fetchMercurial to a input type
This enables Mercurial flakes. It also fixes a bug in pure mode where
you could use a branch/tag name rather than a revision.
2020-01-21 23:49:32 +01:00
Eelco Dolstra
9f4d8c6170 Pluggable fetchers
Flakes are now fetched using an extensible mechanism. Also lots of
other flake cleanups.
2020-01-21 22:56:04 +01:00
Eelco Dolstra
ecb3a1afa2 Merge remote-tracking branch 'origin/master' into flakes 2019-12-11 14:53:30 +01:00
Eelco Dolstra
bbe97dff8b Make the Store API more type-safe
Most functions now take a StorePath argument rather than a Path (which
is just an alias for std::string). The StorePath constructor ensures
that the path is syntactically correct (i.e. it looks like
<store-dir>/<base32-hash>-<name>). Similarly, functions like
buildPaths() now take a StorePathWithOutputs, rather than abusing Path
by adding a '!<outputs>' suffix.

Note that the StorePath type is implemented in Rust. This involves
some hackery to allow Rust values to be used directly in C++, via a
helper type whose destructor calls the Rust type's drop()
function. The main issue is the dynamic nature of C++ move semantics:
after we have moved a Rust value, we should not call the drop function
on the original value. So when we move a value, we set the original
value to bitwise zero, and the destructor only calls drop() if the
value is not bitwise zero. This should be sufficient for most types.

Also lots of minor cleanups to the C++ API to make it more modern
(e.g. using std::optional and std::string_view in some places).
2019-12-10 22:06:05 +01:00
Eelco Dolstra
c3c23a52ee Merge remote-tracking branch 'origin/master' into flakes 2019-12-04 00:31:09 +01:00
Eelco Dolstra
8918bae098 Drop remaining uses of external "tar"
Also, fetchGit now runs in O(1) memory since we pipe the output of
'git archive' directly into unpackTarball() (rather than first reading
it all into memory).
2019-11-26 22:07:28 +01:00
Eelco Dolstra
b81d9d26f5
Merge remote-tracking branch 'origin/master' into flakes 2019-11-04 22:29:31 +01:00
Benjamin Hipple
80d5ec6ff4 Minor updates to inline comments
Add missing docstring on InstallableCommand. Also, some of these were wrapped
when they're right next to a line longer than the unwrapped line, so we can just
unwrap them to save vertical space.
2019-10-31 05:56:37 -04:00
Janne Heß
2d1d1e3083 Replace git show with git log
git show seems to print the entire tag message when being called on a tag
instead of a commit. git log instead always prints the correct timestamp
in my tests.
The error nix prints is: `error: stoull`.
2019-10-30 17:15:38 +01:00
Eelco Dolstra
1e23b82a53 exportGitHub(): Don't rely on the ETag from GitHub
We relied on it being the Git revision, but that stopped being the
case.
2019-10-21 23:14:29 +02:00
Eelco Dolstra
0ab64729e9 Improve GitHub caching
In particular, when building a flake lock file, inputs like 'nixpkgs'
are now downloaded only once. Previously, it would fetch
https://api.github.com/repos/<owner>/<repo>/tarball/<ref> and then
later https://api.github.com/repos/<owner>/<repo>/tarball/<rev>, even
though they produce the same result.

Git and GitHub now also share a cache that maps revs to a store path
and other info.
2019-10-16 00:20:51 +02:00
Eelco Dolstra
a15f9b37eb
fetchGit: Support Git trees without any commits
Fixes

  $ nix build
  fatal: bad revision 'HEAD'
  error: program 'git' failed with exit code 128

on a new flake. It is now detected as a dirty tree with revCount = 0.
2019-10-07 15:44:32 +02:00
Eelco Dolstra
bd79c1f6f6 Don't catch exceptions by value
(cherry picked from commit 893be6f5e3)
2019-09-22 21:56:56 +02:00
Eelco Dolstra
893be6f5e3 Don't catch exceptions by value 2019-09-22 21:29:33 +02:00
Eelco Dolstra
68e0f23edc Add flags to disallow dirty Git trees and to turn off warnings 2019-09-20 14:29:49 +02:00
Eelco Dolstra
2fa7f2a56a
Use git+ prefix in flake URI schemes
Fixes #3045.
2019-09-05 17:15:09 +02:00
Eelco Dolstra
30ccf4e52d Turn flake inputs into an attrset
Instead of a list, inputs are now an attrset like

  inputs = {
    nixpkgs.uri = github:NixOS/nixpkgs;
  };

If 'uri' is omitted, than the flake is a lookup in the flake registry, e.g.

  inputs = {
    nixpkgs = {};
  };

but in that case, you can also just omit the input altogether and
specify it as an argument to the 'outputs' function, as in

  outputs = { self, nixpkgs }: ...

This also gets rid of 'nonFlakeInputs', which are now just a special
kind of input that have a 'flake = false' attribute, e.g.

  inputs = {
    someRepo = {
      uri = github:example/repo;
      flake = false;
    };
  };
2019-08-30 16:27:51 +02:00
Eelco Dolstra
bd62290c23
fetchGit: Warn about dirty trees 2019-07-12 12:59:00 +02:00
Eelco Dolstra
cc218b15ba Merge remote-tracking branch 'origin/master' into flakes 2019-07-06 21:06:22 +02:00
Eelco Dolstra
33db1d35ae
Merge pull request #2582 from LnL7/fetchgit-refs
fetchGit: allow fetching explicit refs
2019-07-02 15:44:31 +02:00
Eelco Dolstra
2cc248c4fd
Merge remote-tracking branch 'origin/master' into flakes 2019-06-25 14:27:57 +02:00
Eelco Dolstra
64ec087f58
Fix 32-bit overflow with --no-net
--no-net causes tarballTtl to be set to the largest 32-bit integer,
which causes comparison like 'time + tarballTtl < other_time' to
fail on 32-bit systems. So cast them to 64-bit first.

https://hydra.nixos.org/build/95076624
(cherry picked from commit 29ccb2e969)
2019-06-24 22:16:43 +02:00
Eelco Dolstra
b43e1e186e
CachedDownloadResult: Include store path
Also, make fetchGit and fetchMercurial update allowedPaths properly.

(Maybe the evaluator, rather than the caller of the evaluator, should
apply toRealPath(), but that's a bigger change.)

(cherry picked from commit 5c34d66538)
2019-06-24 21:59:27 +02:00
Eelco Dolstra
94f11d0a61
Fix abort in fromTOML
Fixes #2969.
2019-06-24 17:09:09 +02:00
Eelco Dolstra
29ccb2e969
Fix 32-bit overflow with --no-net
--no-net causes tarballTtl to be set to the largest 32-bit integer,
which causes comparison like 'time + tarballTtl < other_time' to
fail on 32-bit systems. So cast them to 64-bit first.

https://hydra.nixos.org/build/95076624
2019-06-21 12:53:52 +02:00
Eelco Dolstra
54aff8430c
Move flake-related stuff to src/libexpr/flake 2019-06-05 16:51:54 +02:00
Eelco Dolstra
1b05792988
Shorter syntax for referencing flake outputs
Fixes #2819.
2019-06-04 22:35:43 +02:00
Eelco Dolstra
ce225615c3
Eliminate duplicate fetching of the top-level flake 2019-06-04 21:10:53 +02:00
Eelco Dolstra
087530dec4
Add comments 2019-06-04 21:07:55 +02:00
Eelco Dolstra
1e53a07712
Make non-flake inputs lazy
Also add a proper test for non-flake inputs.
2019-06-04 20:56:42 +02:00
Eelco Dolstra
1c5067b9a7
Check hash 2019-06-04 20:35:35 +02:00
Eelco Dolstra
5fe7be2409
Rename dep -> input
Also use nlohmann::json range-based for.
2019-06-04 20:08:13 +02:00
Eelco Dolstra
9e99b5205c
Move LockFile and related types to a separate file 2019-06-04 20:01:21 +02:00
Eelco Dolstra
278114d559
Fix GC closure generation 2019-06-04 19:45:16 +02:00
Eelco Dolstra
6dbd5c26e6
Make flake input fetching lazy
As long as the flake input is locked, it is now only fetched when it
is evaluated (e.g. "nixpkgs" is fetched when
"inputs.nixpkgs.<something>" is evaluated).

This required adding an "id" attribute to the members of "inputs" in
lockfiles, e.g.

  "inputs": {
    "nixpkgs/release-19.03": {
      "id": "nixpkgs",
      "inputs": {},
      "narHash": "sha256-eYtxncIMFVmOHaHBtTdPGcs/AnJqKqA6tHCm0UmPYQU=",
      "nonFlakeInputs": {},
      "uri": "github:edolstra/nixpkgs/e9d5882bb861dc48f8d46960e7c820efdbe8f9c1"
    }
  }

because the flake ID needs to be known beforehand to construct the
"inputs" attrset.

Fixes #2913.
2019-06-04 19:17:03 +02:00
Eelco Dolstra
653c4e439b
Fix clang compilation error
https://hydra.nixos.org/build/94332344

https://stackoverflow.com/questions/46114214/lambda-implicit-capture-fails-with-variable-declared-from-structured-binding
2019-06-03 21:51:06 +02:00
Nick Van den Broeck
d9a6a75ed2 Made epochs more fine-grained
Fixes #2894
2019-06-03 14:47:47 +02:00
Eelco Dolstra
8abb8647a3
Automatically determine subdir for path flakes
This means that in a flake in a subdirectory of a Git repo, you can
now do

  $ nix build

rather than the inconvenient

  $ nix build ../..?dir=foo/bar
2019-05-31 21:52:02 +02:00
Eelco Dolstra
ccb1bad612
Allow bare flakerefs as installables
So now

  $ nix build blender-bin

works and builds the default package from that flake. You don't need
to add a colon at the end anymore.
2019-05-31 21:42:23 +02:00
Eelco Dolstra
7adb10d29b
Fix reading the lockfile of a flake in a subdirectory 2019-05-31 20:12:59 +02:00
Eelco Dolstra
9169046e64
Add operator << for LockFile
Useful for debugging.
2019-05-31 20:10:56 +02:00
Eelco Dolstra
b971e406de
Support 'dir' and other parameters in path flakerefs 2019-05-31 19:01:11 +02:00
Eelco Dolstra
094539ef4a
Rename requires -> inputs, provides -> outputs
Issue #2828.
2019-05-31 09:59:48 +02:00
Eelco Dolstra
6ae4437acb
Remove makeFlakeValue() 2019-05-29 15:44:48 +02:00
Eelco Dolstra
6e4a8c47f4
Put flake-related stuff in its own namespace 2019-05-29 15:31:07 +02:00
Eelco Dolstra
c356d034f3
Make unsupported flake attributes a fatal error 2019-05-29 15:12:22 +02:00
Eelco Dolstra
ae7b56cd9a
Get last commit time of github flakes 2019-05-29 10:10:40 +02:00