{
  inputs = {
    nixpkgs.url = "nixpkgs/nixos-26.05";
    flakelight = {
      url = "github:nix-community/flakelight";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    steam-fetcher = {
      url = "github:nix-community/steam-fetcher";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = {
    flakelight,
    steam-fetcher,
    ...
  }: let
    inherit (builtins) listToAttrs map;
    inheritPkgs = names:
      listToAttrs (map (name: {
          inherit name;
          value = {pkgs, ...}: pkgs.${name};
        })
        names);
  in
    flakelight ./. {
      nixpkgs.config = {allowUnfree = true;};

      systems = ["x86_64-linux" "i686-linux"];
      withOverlays = [
        steam-fetcher.overlay
        (import ./nix/overlay.nix)
      ];

      formatters = pkgs:
        with pkgs; {
          "*.nix" = pkgs.lib.getExe alejandra;
        };

      perSystem = pkgs: {
        sourcemods = pkgs.lib.mapAttrs (name: sdk: pkgs.sourcemod-builder {${name} = sdk;}) pkgs.hl2sdk;
        metamods = pkgs.lib.mapAttrs (name: sdk: pkgs.metamod-source-builder {${name} = sdk;}) pkgs.hl2sdk;
        hl2sdk = pkgs.hl2sdk;
        steam-depots = pkgs.steam-depots;
      };

      packages =
        inheritPkgs [
          "ambuild"
          "sourcepawn"
          "sourcemod"
          "sourcemod-includes"
          "sourcemod-include-curl"
          "sourcemod-include-library"
          "sourcemod-include-steamworks"
          "srcds-tf2"
          "sourcemod-plugin-steamworks"
          "sourcemod-plugin-soap-tf2dm"
          "sourcemod-plugin-progressive-ruleset-timer"
          "sourcemod-plugin-socket"
          "sourcemod-plugin-tf2-comp-fixes"
        ]
        // {
          test = pkgs:
            pkgs.srcds-tf2.customize {
              cfg = {
                hostname = "Spire Server";
              };
              sourcemod = true;
            };
          testScript = pkgs:
            pkgs.buildSourcePawnScript {
              name = "test";
              src = pkgs.fetchurl {
                url = "https://codeberg.org/spire/nocheats/raw/commit/5e0e21c241fdf8907d83d9bcf3cce37711b83d14/plugin/nocheats.sp";
                sha256 = "sha256-Z3RJhuc9c8YQTo9gnLTBrqL4JpADZgDttrJVyE/MWdM=";
              };
            };
        };

      checks = {
        buildTestScript = {pkgs, ...}:
          pkgs.buildSourcePawnScript {
            name = "test";
            src = pkgs.fetchurl {
              url = "https://codeberg.org/spire/nocheats/raw/commit/5e0e21c241fdf8907d83d9bcf3cce37711b83d14/plugin/nocheats.sp";
              sha256 = "sha256-Z3RJhuc9c8YQTo9gnLTBrqL4JpADZgDttrJVyE/MWdM=";
            };
          };
      };

      devShells.default = {pkgs, ...}: {
        packages = with pkgs; [nix-update depotdownloader];
      };
    };
}