diff options
Diffstat (limited to 'nixos/lib/default.nix')
-rw-r--r-- | nixos/lib/default.nix | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/nixos/lib/default.nix b/nixos/lib/default.nix new file mode 100644 index 0000000000000..2b3056e01457f --- /dev/null +++ b/nixos/lib/default.nix @@ -0,0 +1,33 @@ +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; }; +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 + ; +} |