# nixos-config - My current NixOS configuration
#
# Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
# SPDX-License-Identifier: GPL-3.0-or-later
#
# This file is part of my nixos-config.
#
# You should have received a copy of the License along with this program.
# If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
{
  lib,
  config,
  packageSets,
  ...
}: let
  cfg = config.soispha.nixpkgs;
in {
  options.soispha.nixpkgs = {
    enable = lib.mkEnableOption "Nixpkgs config";
    systemName = lib.mkOption {
      description = "The name of the system.";
      example = "x86_64-linux";
      type = lib.types.str;
    };
    unfreePackageNames = lib.mkOption {
      description = "Names of unfree packages to allow";
      example = "[ steam steam-unwrapped ]";
      type = lib.types.listOf lib.types.str;
    };
    problemHandlers = lib.mkOption {
      description = "Decide how to handle a package marked with problems.";
      example = "{ \"gtk+\".broken = \"warn\"; }";
      type = lib.types.attrsOf (lib.types.attrsOf lib.types.anything);
    };
  };

  config = let
    myPkgsOverlay = self: super: packageSets.in_tree;
  in
    lib.mkIf cfg.enable
    {
      nixpkgs = {
        hostPlatform = cfg.systemName;

        overlays = [
          myPkgsOverlay
        ];

        config = {
          hostSystem = cfg.systemName;

          problems.handlers = cfg.problemHandlers;

          allowUnfreePredicate = pkg:
            builtins.elem (lib.getName pkg) cfg.unfreePackageNames;
        };
      };
    };
}