anchor.diff:      homepage = "https://github.com/aruiz/webp-pixbuf-loader";
       license = licenses.lgpl2Plus;
       platforms = platforms.unix;
  -    maintainers = [ maintainers.cwyc ];
  +    maintainers = teams.gnome.members ++ [ maintainers.cwyc ];
       # meson.build:16:0: ERROR: Program or command 'gcc' not found or not executable
       broken = stdenv.isDarwin;
     };
  
positive.code: 
    src = fetchFromGitHub {
      owner = "aruiz";
      repo = pname;
      rev = version;
      sha256 = "sha256-dcdydWYrXZJjo4FxJtvzGzrQLOs87/BmxshFZwsT2ws=";
    };
  
    # It looks for gdk-pixbuf-thumbnailer in this package's bin rather than the gdk-pixbuf bin. We need to patch that.
    postPatch = ''
      substituteInPlace webp-pixbuf.thumbnailer.in --replace @bindir@/gdk-pixbuf-thumbnailer $out/bin/webp-thumbnailer
    '';
  
    nativeBuildInputs = [ gdk-pixbuf meson ninja pkg-config makeWrapper ];
    buildInputs = [ gdk-pixbuf libwebp ];
  
    mesonFlags = [
      "-Dgdk_pixbuf_query_loaders_path=${gdk-pixbuf.dev}/bin/gdk-pixbuf-query-loaders"
      "-Dgdk_pixbuf_moduledir=${placeholder "out"}/${moduleDir}"
    ];
  
    # It assumes gdk-pixbuf-thumbnailer can find the webp loader in the loaders.cache referenced by environment variable, breaking containment.
    # So we replace it with a wrapped executable.
    postInstall = ''
      mkdir -p $out/bin
      makeWrapper ${gdk-pixbuf}/bin/gdk-pixbuf-thumbnailer $out/bin/webp-thumbnailer \
        --set GDK_PIXBUF_MODULE_FILE $out/${loadersPath}
    '';
  
    # environment variables controlling loaders.cache generation by gdk-pixbuf-query-loaders
    preInstall = ''
      export GDK_PIXBUF_MODULE_FILE=$out/${loadersPath}
      export GDK_PIXBUF_MODULEDIR=$out/${moduleDir}
    '';
  
    meta = with lib; {
  
negative.code: { lib
  , stdenv
  , fetchFromGitHub
  , meson
  , ninja
  , pkg-config
  , makeWrapper
  , gdk-pixbuf
  , libwebp
  }:
  
  let
    inherit (gdk-pixbuf) moduleDir;
  
    # turning lib/gdk-pixbuf-#.#/#.#.#/loaders into lib/gdk-pixbuf-#.#/#.#.#/loaders.cache
    # removeSuffix is just in case moduleDir gets a trailing slash
  