forked from extern/flakelight
70 lines
1.8 KiB
Nix
70 lines
1.8 KiB
Nix
# flakelight -- Framework for simplifying flake setup
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# Copyright (C) 2023 Archit Gupta <archit@accelbread.com>
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# SPDX-License-Identifier: MIT
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{ config, inputs, lib, flakelight, ... }:
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let
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inherit (builtins) all head isAttrs length;
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inherit (lib) foldAttrs getFiles getValues mapAttrs mergeAttrs mkOption
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mkOptionType showFiles showOption;
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inherit (lib.types) functionTo lazyAttrsOf listOf nonEmptyStr raw uniq;
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inherit (flakelight.types) optListOf overlay;
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outputs = mkOptionType {
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name = "outputs";
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description = "output values";
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descriptionClass = "noun";
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merge = loc: defs:
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if (length defs) == 1 then (head defs).value
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else if all isAttrs (getValues defs) then
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(lazyAttrsOf outputs).merge loc defs
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else throw "The option `${showOption loc}' has conflicting definitions in ${showFiles (getFiles defs)}";
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};
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in
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{
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options = {
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inputs = mkOption {
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type = lazyAttrsOf raw;
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};
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systems = mkOption {
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type = uniq (listOf nonEmptyStr);
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default = [ "x86_64-linux" "aarch64-linux" ];
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};
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outputs = mkOption {
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type = lazyAttrsOf outputs;
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default = { };
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};
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perSystem = mkOption {
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type = functionTo (lazyAttrsOf outputs);
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default = _: { };
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};
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nixpkgs.config = mkOption {
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type = lazyAttrsOf raw;
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default = { };
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};
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withOverlays = mkOption {
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type = optListOf overlay;
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default = [ ];
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};
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};
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config = {
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_module.args = { inherit (config) inputs outputs; };
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outputs = foldAttrs mergeAttrs { } (map
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(system: mapAttrs
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(_: v: { ${system} = v; })
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(config.perSystem (import inputs.nixpkgs {
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inherit system;
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inherit (config.nixpkgs) config;
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overlays = config.withOverlays ++ [ config.packageOverlay ];
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})))
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config.systems);
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};
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}
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