flake.nix

{
  description = "ZenOS Setup - Unified Installer and OOBE";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
  };
outputs =
    { self, nixpkgs }:
    let
      system = "x86_64-linux";
      pkgs = nixpkgs.legacyPackages.${system};

      # move your core build logic here so you don't repeat yourself
      baseApp = pkgs.stdenv.mkDerivation {
        pname = "zenos-setup";
        version = "0.1.0";
        src = ./.;

        nativeBuildInputs = with pkgs; [
          meson ninja pkg-config gobject-introspection wrapGAppsHook4
          desktop-file-utils appstream-glib appstream libxml2 glib python3
        ];

        buildInputs = with pkgs; [
          gtk4 libgweather libadwaita networkmanager python3
          python3Packages.pygobject3 python3Packages.requests
          python3Packages.babel gst_all_1.gstreamer gst_all_1.gst-plugins-base
          gst_all_1.gst-plugins-good gst_all_1.gst-libav
          firefox gparted gnome-console
        ];

        postInstall = ''
          wrapProgram $out/bin/zenos-setup \
            --prefix PYTHONPATH : "$PYTHONPATH" \
            --prefix GI_TYPELIB_PATH : "$GI_TYPELIB_PATH" \
            --prefix PATH : ${pkgs.lib.makeBinPath [ pkgs.gparted pkgs.gnome-console pkgs.firefox ]} \
            --set ZENOS_VIDEO_PATH "${introVideo}" \
            --set ZENOS_WALLPAPER_PATH "$src/data/wallpapers/"
        '';
      };

      introVideo = pkgs.fetchurl {
        url = "https://r2.neg-zero.com/intro.mkv";
        sha256 = "sha256-BciVM83HWmloezUTjrKlvv2CHGEgpNb84zUy9zkGlGM=";
      };
    in
    {
      packages.${system} = {
        # the main installer
        zenos-install = baseApp;

        # the oobe wrapper
        zenos-oobe = pkgs.writeShellScriptBin "zenos-oobe" ''
          if [ -z "$ZENOS_VIDEO_PATH" ]; then
            export ZENOS_VIDEO_PATH="${introVideo}"
          fi
          exec ${baseApp}/bin/zenos-setup --oobe "$@"
        '';

        # keep a default so 'nix build' still works without arguments
        default = self.packages.${system}.zenos-install;
      };
    };
    }