{inputs, ...}: {
  additions = final: _prev: import ../pkgs final.pkgs;

  modifications = final: prev: {
    mods = {
      helix = (inputs.helix.overlays.default final prev).helix;
      #   helix = inputs.helix.packages.${final.system}.helix.overrideAttrs (finalAttrs: oldAttrs: {
      #     patches =
      #       oldAttrs.patches
      #       ++ [
      #         # dark / light mode
      #         (prev.fetchpatch {
      #           url = "https://github.com/helix-editor/helix/pull/14356.patch";
      #           hash = "sha256-VeV+LIUgvBjviwxdiWLTYh38FeMaW54pAz+t3lXzB0M=";
      #           excludes = ["book/src/themes.md"];
      #         })
      #       ];

      #     cargoHash = "sha256-j3TRLqL1wjia9lgvlnJ1qDA8MBCqwCv5eF8kxqfYIlE=";
      #     cargoDeps = prev.rustPlatform.fetchCargoVendor {
      #       inherit (finalAttrs) src;
      #       hash = finalAttrs.cargoHash;
      #     };
      #   });

      xwayland-satellite = prev.xwayland-satellite.overrideAttrs (finalAttrs: old: {
        src = prev.fetchFromGitHub {
          owner = "Supreeeme";
          repo = "xwayland-satellite";
          rev = "41e865c8d35468c67b991ef5a245a98b3e44108c";
          hash = "sha256-SGcqX3amLH4xiA+dwF2Fu2mt1O8zHc60v0+NEZGDJhw=";
        };

        cargoHash = "sha256-BL2JaO/NGYhXtXtbVlsTxkO6SMO5D8aDSaPf7oV2TVE=";
        cargoDeps = prev.rustPlatform.fetchCargoVendor {
          inherit (finalAttrs) pname src version;
          hash = finalAttrs.cargoHash;
        };
      });
    };
  };

  unstable-packages = final: prev: {
    unstable = import inputs.nixpkgs-unstable {
      system = final.system;
      config.allowUnfree = true;
    };
  };

  niri = inputs.niri.overlays.niri;
}