73 lines
1.9 KiB
Nix
73 lines
1.9 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.nixpkgs;
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# Copied from nixpkgs.nix.
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isConfig = x: builtins.isAttrs x || builtins.isFunction x;
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# Copied from nixpkgs.nix.
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optCall = f: x: if builtins.isFunction f then f x else f;
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# Copied from nixpkgs.nix.
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mergeConfig = lhs_: rhs_:
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let
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lhs = optCall lhs_ { inherit pkgs; };
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rhs = optCall rhs_ { inherit pkgs; };
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in lhs // rhs // optionalAttrs (lhs ? packageOverrides) {
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packageOverrides = pkgs:
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optCall lhs.packageOverrides pkgs
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// optCall (attrByPath [ "packageOverrides" ] ({ }) rhs) pkgs;
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} // optionalAttrs (lhs ? perlPackageOverrides) {
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perlPackageOverrides = pkgs:
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optCall lhs.perlPackageOverrides pkgs
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// optCall (attrByPath [ "perlPackageOverrides" ] ({ }) rhs) pkgs;
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};
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# Copied from nixpkgs.nix.
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configType = mkOptionType {
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name = "nixpkgs-config";
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description = "nixpkgs config";
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check = x:
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let traceXIfNot = c: if c x then true else lib.traceSeqN 1 x false;
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in traceXIfNot isConfig;
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merge = args: fold (def: mergeConfig def.value) { };
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};
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# Copied from nixpkgs.nix.
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overlayType = mkOptionType {
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name = "nixpkgs-overlay";
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description = "nixpkgs overlay";
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check = builtins.isFunction;
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merge = lib.mergeOneOption;
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};
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in {
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meta.maintainers = with maintainers; [ thiagokokada ];
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options.nixpkgs = {
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config = mkOption {
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default = null;
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type = types.nullOr configType;
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visible = false;
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};
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overlays = mkOption {
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default = null;
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type = types.nullOr (types.listOf overlayType);
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visible = false;
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};
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};
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config = {
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assertions = [{
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assertion = cfg.config == null || cfg.overlays == null;
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message = ''
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`nixpkgs` options are disabled when `home-manager.useGlobalPkgs` is enabled.
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'';
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}];
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};
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}
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