nixpkgs/nixos/lib/default.nix
Silvan Mosberger 4f0dadbf38 treewide: format all inactive Nix files
After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.

Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.

A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.

This commit was automatically created and can be verified using

    nix-build a08b3a4d19.tar.gz \
      --argstr baseRev b32a094368
    result/bin/apply-formatting $NIXPKGS_PATH
2024-12-10 20:26:33 +01:00

43 lines
1.3 KiB
Nix

let
# The warning is in a top-level let binding so it is only printed once.
minimalModulesWarning = warn "lib.nixos.evalModules is experimental and subject to change. See nixos/lib/default.nix" null;
inherit (nonExtendedLib) warn;
nonExtendedLib = import ../../lib;
in
{
# Optional. Allows an extended `lib` to be used instead of the regular Nixpkgs lib.
lib ? nonExtendedLib,
# Feature flags allow you to opt in to unfinished code. These may change some
# behavior or disable warnings.
featureFlags ? { },
# This file itself is rather new, so we accept unknown parameters to be forward
# compatible. This is generally not recommended, because typos go undetected.
...
}:
let
seqIf = cond: if cond then builtins.seq else a: b: b;
# If cond, force `a` before returning any attr
seqAttrsIf = cond: a: lib.mapAttrs (_: v: seqIf cond a v);
eval-config-minimal = import ./eval-config-minimal.nix { inherit lib; };
testing-lib = import ./testing/default.nix { inherit lib; };
in
/*
This attribute set appears as lib.nixos in the flake, or can be imported
using a binding like `nixosLib = import (nixpkgs + "/nixos/lib") { }`.
*/
{
inherit (seqAttrsIf (!featureFlags ? minimalModules) minimalModulesWarning eval-config-minimal)
evalModules
;
inherit (testing-lib)
evalTest
runTest
;
}