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| author | Jasper Ras <jras@hostnet.nl> | 2025-01-08 10:48:09 +0100 |
|---|---|---|
| committer | Jasper Ras <jras@hostnet.nl> | 2025-01-08 10:48:09 +0100 |
| commit | ed0753ad224f0c65133bd7a63180257eecd9f5e3 (patch) | |
| tree | cc662868574fe17db58be9e0faadd452c84dc59c /3 resources/nix/flakes.md | |
| parent | 493be30dc981eaf762a95a1218f96893b1976727 (diff) | |
vault backup: 2025-01-08 10:48:09
Diffstat (limited to '3 resources/nix/flakes.md')
| -rw-r--r-- | 3 resources/nix/flakes.md | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/3 resources/nix/flakes.md b/3 resources/nix/flakes.md new file mode 100644 index 0000000..fb99500 --- /dev/null +++ b/3 resources/nix/flakes.md @@ -0,0 +1,19 @@ +Nix flakes are source trees containing a file `flake.nix` at their root. The file `flake.nix` provides a standardized way to provide [[Zettelkast/Index/Nix]] artifacts. It's like a package manager for [[Zettelkast/Index/Nix]]. A flake can be dependent on other Flakes and it's possible to pin dependencies to exact revisions by using a `flake.lock` file. + +Nix flake evaluation is hermetic, meaning that it produces the same result wherever it's built.k + +The feature can be enabled in `~/.config/nix/nix.conf`: + +``` +experimental-features = nix-command flakes +``` + +To initialize in a repo: `nix flake init`. + +In flakes dependencies have to be specified explicitly and MUST be locked to specific versions therefore it's no longer allowed to use the nixpkgs found in `NIX_PATH` by referencing it like `<nixpkgs>`. + +Output of a Flake is an arbitrary [[Zettelkast/Index/Nix]] value such as a package, [[NixOS]] module or library function. +Commands `nix build` and `nix shell` will build the output `packages.<system>.default` unless we specify another output, for example: `nix shell .#checks.aarch64-linux.build`. + +--- +[Flakes Wiki](https://nixos.wiki/wiki/Flakes)
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