{ stdenv , lib , fetchFromGitLab , cairo , desktop-file-utils , gettext , glib , gtk4 , libadwaita , meson , ninja , pango , pkg-config , python3 , rustPlatform , wrapGAppsHook4 }:  stdenv.mkDerivation rec {   pname = "contrast";   version = "0.0.5";    src = fetchFromGitLab {     domain = "gitlab.gnome.org";     group = "World";     owner = "design";     repo = "contrast";     rev = version;     sha256 = "cypSbqLwSmauOoWOuppWpF3hvrxiqmkLspxAWzvlUC0=";   };    cargoDeps = rustPlatform.fetchCargoTarball {     inherit src;     name = "${pname}-${version}";     hash = "sha256-W4FyqwJpimf0isQRCq9TegpTQPQfsumx40AFQCFG5VQ=";   };    nativeBuildInputs = [     desktop-file-utils     gettext     meson     ninja     pkg-config     python3     rustPlatform.rust.cargo     rustPlatform.cargoSetupHook     rustPlatform.rust.rustc     wrapGAppsHook4     glib # for glib-compile-resources
  ];    buildInputs = [     cairo     glib     gtk4     libadwaita     pango   ];    postPatch = ''
    patchShebangs build-aux/meson_post_install.py
    # https://gitlab.gnome.org/World/design/contrast/-/merge_requests/23
    substituteInPlace build-aux/meson_post_install.py \
      --replace "gtk-update-icon-cache" "gtk4-update-icon-cache"
  '';    meta = with lib; {     description = "Checks whether the contrast between two colors meet the WCAG requirements";     homepage = "https://gitlab.gnome.org/World/design/contrast";     license = licenses.gpl3Plus;     maintainers = with maintainers; [ jtojnar ];     platforms = platforms.unix;   }; }
