26 lines
654 B
Nix
26 lines
654 B
Nix
{
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config,
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lib,
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pkgs,
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self,
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...
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}:
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let
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cfg = config.unstable;
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unstableOverlay = self.overlays.unstableWithMeta;
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in
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{
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options.unstable = {
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enable = lib.mkEnableOption (lib.mkDoc ''
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use of unstable packages in configuration. You can use `unstablePkgs` in configuration modules
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'') // { default = true; };
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};
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config = {
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_module.args.unstablePkgs = if config.unstable.enable then pkgs.unstable else pkgs;
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nixpkgs.overlays = lib.mkIf cfg.enable [ unstableOverlay ];
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system.extraSystemBuilderCmds = lib.mkIf config.unstable.enable ''
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echo ${pkgs.unstableVersion} > $out/nixos-unstable-version
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'';
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};
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}
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