Commit graph

80 commits

Author SHA1 Message Date
Eelco Dolstra 9747ea84b4 Remove CPU locking
This was already accidentally disabled in ba87b08. It also no longer
appears to be beneficial, and in fact slow things down, e.g. when
evaluating a NixOS system configuration:

  elapsed time:       median =      3.8170  mean =      3.8202  stddev =      0.0195  min =      3.7894  max =      3.8600  [rejected, p=0.00000, Δ=0.36929±0.02513]
2021-12-22 15:56:25 +01:00
Jan Tojnar 2d66a31f01 nix {bundle,run}: drop broken flake attr-path prefixes
“packages” was probably meant to be “packages.${system}.” but that
is already listed in `getDefaultFlakeAttrPathPrefixes` in `installables`,
which is probably why no one noticed it was broken.
2021-08-21 20:17:05 +02:00
Eelco Dolstra ed5ad59dc1 nix develop: Support chroot stores
Fixes #5024.
2021-07-27 14:24:03 +02:00
Eelco Dolstra 8d9f7048cd Use eval-store in more places
In particular, this now works:

  $ nix path-info --eval-store auto --store https://cache.nixos.org nixpkgs#hello

Previously this would fail as it would try to upload the hello .drv to
cache.nixos.org. Now the .drv is instantiated in the local store, and
then we check for the existence of the outputs in cache.nixos.org.
2021-07-22 09:59:51 +02:00
Eelco Dolstra 4202a3bc4e UDSRemoteStore: Support the 'root' store parameter
Useful when we're using a daemon with a chroot store, e.g.

  $ NIX_DAEMON_SOCKET_PATH=/tmp/chroot/nix/var/nix/daemon-socket/socket nix-daemon --store /tmp/chroot

Then the client can now connect with

  $ nix build --store unix:///tmp/chroot/nix/var/nix/daemon-socket/socket?root=/tmp/chroot nixpkgs#hello
2021-06-18 17:04:11 +02:00
regnat ca96f52194 Split the parsing of an App and its resolving
That way things (like `nix flake check`) can evaluate the `app` outputs
without having to build anything
2021-05-17 17:50:41 +02:00
Eelco Dolstra 9b9e703df4 restoreSignals() + restoreAffinity() -> restoreProcessContext() 2021-04-07 13:10:02 +02:00
John Ericson 9b805d36ac Rename Buildable 2021-04-05 09:52:25 -04:00
John Ericson 255d145ba7 Use BuildableReq for buildPaths and ensurePath
This avoids an ambiguity where the `StorePathWithOutputs { drvPath, {}
}` could mean "build `brvPath`" or "substitute `drvPath`" depending on
context.

It also brings the internals closer in line to the new CLI, by
generalizing the `Buildable` type is used there and makes that
distinction already.

In doing so, relegate `StorePathWithOutputs` to being a type just for
backwards compatibility (CLI and RPC).
2021-04-05 08:33:00 -04:00
Eelco Dolstra 3da9a9241c Convert option descriptions to Markdown 2021-01-13 14:18:04 +01:00
Eelco Dolstra a93916b190
Merge pull request #4336 from NixOS/manpages
Documentation for nix subcommands
2020-12-23 21:10:32 +01:00
Eelco Dolstra 5373f4be3b chrootHelper: Handle symlinks in the root directory
This is necessary on Ubuntu where /bin and /lib* are symlinks.
2020-12-22 12:28:50 +01:00
Eelco Dolstra 09660b8557
Add 'nix run' and 'nix shell' manpages 2020-12-21 13:32:27 +01:00
regnat 438977731c shut up clang warnings
- Fix some class/struct discrepancies
- Explicit the overloading of `run` in the `Cmd*` classes
- Ignore a warning in the generated lexer
2020-12-01 15:04:03 +01:00
Eelco Dolstra 85c8be6286 Remove static variable name clashes
This was useful for an experiment with building Nix as a single
compilation unit. It's not very useful otherwise but also doesn't
hurt...
2020-10-06 13:49:20 +02:00
DavHau f3280004e2 add more examples to --help of nix run 2020-10-01 11:34:13 +07:00
Eelco Dolstra 3624c042ac nix: Add --derivation flag to operate on .drv paths
For instance, 'nix why-depends --use-derivation nixpkgs#hello
nixpkgs#glibc' shows why hello's .drv depends on glibc's .drv.
2020-07-15 20:25:10 +02:00
Eelco Dolstra 94eb5fad76 Clean up RealiseMode 2020-07-15 20:05:42 +02:00
Eelco Dolstra 26cf0c674f nix run: Use packages/legacyPackages as fallback if there is no app definition
'nix run' will try to run $out/bin/<name>, where <name> is the
derivation name (excluding the version). This often works well:

  $ nix run nixpkgs#hello
  Hello, world!

  $ nix run nix -- --version
  nix (Nix) 2.4pre20200626_adf2fbb

  $ nix run patchelf -- --version
  patchelf 0.11.20200623.e61654b

  $ nix run nixpkgs#firefox -- --version
  Mozilla Firefox 77.0.1

  $ nix run nixpkgs#gimp -- --version
  GNU Image Manipulation Program version 2.10.14

though not always:

  $ nix run nixpkgs#git
  error: unable to execute '/nix/store/kp7wp760l4gryq9s36x481b2x4rfklcy-git-2.25.4/bin/git-minimal': No such file or directory
2020-06-29 19:08:50 +02:00
Eelco Dolstra 1524752c17 Merge remote-tracking branch 'origin/master' into flakes 2020-06-17 10:26:52 +02:00
Eelco Dolstra 29542865ce Remove StorePath::clone() and related functions 2020-06-16 22:20:18 +02:00
Eelco Dolstra 5f64655ff4 Move registry-related commands from 'nix flake' to 'nix registry'
This makes 'nix flake' less cluttered and more consistent (it's only
subcommands that operator on a flake). Also, the registry is not
inherently flake-related (e.g. fetchTree could also use it to remap
inputs).
2020-05-15 14:38:10 +02:00
Ben Burdette 59b1f5c701 Merge branch 'master' into errors-phase-2 2020-05-11 14:35:30 -06:00
Eelco Dolstra 4c3c638a05 Cleanup 2020-05-11 15:57:45 +02:00
Eelco Dolstra e0c19ee620 Add completion for paths 2020-05-10 21:35:07 +02:00
Eelco Dolstra 6f3244ce45 Merge remote-tracking branch 'origin/master' into flakes 2020-05-05 18:59:33 +02:00
Eelco Dolstra a721a0b114 Flag: Use designated initializers 2020-05-04 22:40:19 +02:00
Matthew Kenigsberg d6b4047c2f rename nix run to nix shell and nix app to nix run
(cherry picked from commit 5d8504b978)
2020-05-01 12:17:36 +02:00
Matthew Kenigsberg 5d8504b978 rename nix run to nix shell and nix app to nix run 2020-04-29 15:45:10 -06:00
Ben Burdette e4fb9a3849 remove 'format' from Error constructor calls 2020-04-21 17:07:07 -06:00
Eelco Dolstra d103c79144
Merge remote-tracking branch 'origin/master' into flakes 2020-04-09 15:54:21 +02:00
mlatus 9d04b5da17 nix run using $SHELL as default command 2020-04-07 20:29:40 +08:00
Eelco Dolstra e1a94ad852 Backport 'nix dev-shell' from the flakes branch
This also adds a '--profile' option to 'nix build' (replacing 'nix-env
--set').
2020-03-30 19:16:45 +02:00
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 ac67685606 Make subcommand construction in MultiCommand lazy
(cherry picked from commit a0de58f471)
2019-12-05 20:19:26 +01:00
Eelco Dolstra c3c23a52ee Merge remote-tracking branch 'origin/master' into flakes 2019-12-04 00:31:09 +01:00
Eelco Dolstra ba87b08f85
getEnv(): Return std::optional
This allows distinguishing between an empty value and no value.
2019-11-22 16:18:13 +01:00
matthew 6419f5028b use MixEnvironment in run and shell 2019-11-07 17:22:16 -06:00
matthew 693e8b1286 changes 2019-11-07 17:22:16 -06:00
matthew d2438f86d5 environment fixes in run
Move environment related code to a separate function. Create a new char** if ignoreEnvironment is set rather than calling clearEnv
2019-11-07 17:22:16 -06:00
matthew d865085c7e change deprecated attribute syntax in run examples 2019-10-31 23:13:08 -05:00
Eelco Dolstra 7d38060a0d Support non-x86_64-linux system types in flakes
A command like

  $ nix run nixpkgs#hello

will now build the attribute 'packages.${system}.hello' rather than
'packages.hello'. Note that this does mean that the flake needs to
export an attribute for every system type it supports, and you can't
build on unsupported systems. So 'packages' typically looks like this:

  packages = nixpkgs.lib.genAttrs ["x86_64-linux" "i686-linux"] (system: {
    hello = ...;
  });

The 'checks', 'defaultPackage', 'devShell', 'apps' and 'defaultApp'
outputs similarly are now attrsets that map system types to
derivations/apps. 'nix flake check' checks that the derivations for
all platforms evaluate correctly, but only builds the derivations in
'checks.${system}'.

Fixes #2861. (That issue also talks about access to ~/.config/nixpkgs
and --arg, but I think it's reasonable to say that flakes shouldn't
support those.)

The alternative to attribute selection is to pass the system type as
an argument to the flake's 'outputs' function, e.g. 'outputs = { self,
nixpkgs, system }: ...'. However, that approach would be at odds with
hermetic evaluation and make it impossible to enumerate the packages
provided by a flake.
2019-10-15 18:16:29 +02:00
Eelco Dolstra ebc4dae517 Merge remote-tracking branch 'origin/master' into flakes 2019-08-29 16:11:38 +02:00
Matthew Bauer d171090530 Disable CLONE_NEWUSER when it’s unavailable
Some kernels disable "unpriveleged user namespaces". This is
unfortunate, but we can still use mount namespaces. Anyway, since each
builder has its own nixbld user, we already have most of the benefits
of user namespaces.
2019-07-25 14:42:25 -04:00
Eelco Dolstra a0de58f471
Make subcommand construction in MultiCommand lazy 2019-06-18 16:25:31 +02:00
Eelco Dolstra 0d69f7f3f0
nix app: Accept arguments
Example:

  $ nix app blender-bin -- --version
  Blender 2.80 (sub 74)
2019-06-17 17:05:37 +02:00
Eelco Dolstra 2467c98375
nix app: Search for installable in the 'apps' output
I.e. you can write

  $ nix app blender-bin:blender_2_80

which is equivalent to

  $ nix app blender-bin:apps.blender_2_80
2019-06-17 16:58:59 +02:00
Eelco Dolstra 5fbd9fee0b
Add 'nix app' command
This is like 'nix run', except that the command to execute is defined
in a flake output, e.g.

  defaultApp = {
    type = "app";
    program = "${packages.blender_2_80}/bin/blender";
  };

Thus you can do

  $ nix app blender-bin

to start Blender from the 'blender-bin' flake.

In the future, we can extend this with sandboxing. (For example we
would want to be able to specify that Blender should not have network
access by default and should only have access to certain paths in the
user's home directory.)
2019-06-03 09:27:03 +02:00
Eelco Dolstra 01d07b1e92
Revert "Restore parent mount namespace before executing a child process"
This reverts commit a0ef21262f. This
doesn't work in 'nix run' and nix-shell because setns() fails in
multithreaded programs, and Boehm GC mark threads are uncancellable.

Fixes #2646.
2019-02-05 10:49:19 +01:00