nixpkgs/nixos/lib/eval-config-minimal.nix
2022-01-10 12:26:59 +01:00

48 lines
1.4 KiB
Nix

let
# The warning is in a top-level let binding so it is only printed once.
experimentalWarning = warn "lib.nixos.evalModules is experimental and subject to change. See nixos/lib/default.nix" null;
inherit (nonExtendedLib) warn;
nonExtendedLib = import ../../lib;
in
{ lib ? nonExtendedLib, ... }:
let
/*
Invoke NixOS. Unlike traditional NixOS, this does not include all modules.
Any such modules have to be explicitly added via the `modules` parameter,
or imported using `imports` in a module.
A minimal module list improves NixOS evaluation performance and allows
modules to be independently usable, supporting new use cases.
Parameters:
modules: A list of modules that constitute the configuration.
specialArgs: An attribute set of module arguments. Unlike
`config._module.args`, these are available for use in
`imports`.
`config._module.args` should be preferred when possible.
Return:
An attribute set containing `config.system.build.toplevel` among other
attributes. See `lib.evalModules` in the Nixpkgs library.
*/
evalModules = {
prefix ? [],
modules ? [],
specialArgs ? {},
}: lib.evalModules {
inherit prefix modules;
specialArgs = {
modulesPath = builtins.toString ../modules;
} // specialArgs;
};
in
{
evalModules = builtins.seq experimentalWarning evalModules;
}