lix/src/nix/run.md
raito b8cb7abcf0 chore: rebrand Nix to Lix when it makes sense
Here's my guide so far:

$ rg '((?!(recursive).*) Nix
(?!(daemon|store|expression|Rocks!|Packages|language|derivation|archive|account|user|sandbox|flake).*))'
-g '!doc/' --pcre2

All items from this query have been tackled. For the documentation side:
that's for #162.

Additionally, all remaining references to github.com/NixOS/nix which
were not relevant were also replaced.

Fixes: #148.
Fixes: #162.
Change-Id: Ib3451fae5cb8ab8cd9ac9e4e4551284ee6794545
Signed-off-by: Raito Bezarius <raito@lix.systems>
2024-06-01 20:31:24 +02:00

2.3 KiB

R""(

Note: this command's interface is based heavily around installables, which you may want to read about first (nix --help).

Examples

  • Run the default app from the blender-bin flake:

    # nix run blender-bin
    
  • Run a non-default app from the blender-bin flake:

    # nix run blender-bin#blender_2_83
    

    Tip: you can find apps provided by this flake by running nix flake show blender-bin.

  • Run vim from the nixpkgs flake:

    # nix run nixpkgs#vim
    

    Note that vim (as of the time of writing of this page) is not an app but a package. Thus, Lix runs the eponymous file from the vim package.

  • Run vim with arguments:

    # nix run nixpkgs#vim -- --help
    

Description

nix run builds and runs installable, which must evaluate to an app or a regular Nix derivation.

If installable evaluates to an app (see below), it executes the program specified by the app definition.

If installable evaluates to a derivation, it will try to execute the program <out>/bin/<name>, where out is the primary output store path of the derivation, and name is the first of the following that exists:

  • The meta.mainProgram attribute of the derivation.
  • The pname attribute of the derivation.
  • The name part of the value of the name attribute of the derivation.

For instance, if name is set to hello-1.10, nix run will run $out/bin/hello.

Flake output attributes

If no flake output attribute is given, nix run tries the following flake output attributes:

  • apps.<system>.default

  • packages.<system>.default

If an attribute name is given, nix run tries the following flake output attributes:

  • apps.<system>.<name>

  • packages.<system>.<name>

  • legacyPackages.<system>.<name>

Apps

An app is specified by a flake output attribute named apps.<system>.<name>. It looks like this:

apps.x86_64-linux.blender_2_79 = {
  type = "app";
  program = "${self.packages.x86_64-linux.blender_2_79}/bin/blender";
};

The only supported attributes are:

  • type (required): Must be set to app.

  • program (required): The full path of the executable to run. It must reside in the Nix store.

)""