anchor.diff:  
       chmod +x ''${files[@]}
       patchShebangs ''${files[@]}
  +
  +  '' +
  +  # Run-time dependency gi-docgen found: NO (tried pkgconfig and cmake)
  +  # it should be a build-time dep for build
  +  # TODO: send upstream
  +  ''
  +    substituteInPlace meson.build \
  +      --replace "'gi-docgen', ver" "'gi-docgen', native:true, ver"
     '';
   
     preInstall = ''
  
positive.code: , vulkan-headers
  , wayland
  , wayland-protocols
  , xineramaSupport ? stdenv.isLinux
  , cupsSupport ? stdenv.isLinux
  , cups
  
negative.code:     url = "mirror://gnome/sources/gtk/${lib.versions.majorMinor version}/gtk-${version}.tar.xz";
      sha256 = "e7/k0TVp98KX7UmDSscmPjGLe/EC0ycctGbVlx9ZrnA=";
    };
  
    depsBuildBuild = [
      pkg-config
    ];
  
    nativeBuildInputs = [
      gettext
  