forked from extern/flakelight
90 lines
2.2 KiB
Nix
90 lines
2.2 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, lib, flakelight, genSystems, moduleArgs, ... }:
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let
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inherit (lib) filterAttrs functionArgs mapAttrs mkIf mkMerge mkOption;
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inherit (lib.types) coercedTo lazyAttrsOf lines listOf
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package str submodule;
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inherit (flakelight) supportedSystem;
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inherit (flakelight.types) function nullable optCallWith optFunctionTo;
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devShellModule.options = {
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inputsFrom = mkOption {
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type = optFunctionTo (listOf package);
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default = [ ];
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};
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packages = mkOption {
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type = optFunctionTo (listOf package);
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default = [ ];
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};
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shellHook = mkOption {
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type = optFunctionTo lines;
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default = "";
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};
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env = mkOption {
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type = optFunctionTo (lazyAttrsOf str);
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default = { };
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};
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stdenv = mkOption {
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type = optFunctionTo package;
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default = pkgs: pkgs.stdenv;
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};
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overrideShell = mkOption {
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type = nullable package;
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internal = true;
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default = null;
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};
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};
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wrapFn = fn: pkgs:
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let val = pkgs.callPackage fn { }; in
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if (functionArgs fn == { }) || !(package.check val)
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then fn pkgs
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else val;
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packageOverride = p: { overrideShell = p; };
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devShellType = coercedTo function wrapFn
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(optFunctionTo (coercedTo package packageOverride
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(submodule devShellModule)));
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genDevShell = pkgs: cfg:
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if cfg.overrideShell != null then cfg.overrideShell
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else
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let cfg' = mapAttrs (_: v: v pkgs) cfg; in
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pkgs.mkShell.override { inherit (cfg') stdenv; }
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(cfg'.env // { inherit (cfg') inputsFrom packages shellHook; });
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in
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{
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options = {
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devShell = mkOption {
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default = null;
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type = nullable devShellType;
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};
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devShells = mkOption {
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type = optCallWith moduleArgs (lazyAttrsOf devShellType);
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default = { };
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};
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};
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config = mkMerge [
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(mkIf (config.devShell != null) {
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devShells.default = config.devShell;
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})
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(mkIf (config.devShells != { }) {
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outputs.devShells = genSystems (pkgs:
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filterAttrs (_: supportedSystem pkgs)
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(mapAttrs (_: v: genDevShell pkgs (v pkgs)) config.devShells));
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})
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];
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}
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