webp-pixbuf-loader: init at 0.0.6

pkgs/development/libraries/webp-pixbuf-loader/default.nix

@@ -0,0 +1,59 @@
+{ lib, stdenv, fetchFromGitHub
+, meson, ninja, pkg-config, makeWrapper
+, gdk-pixbuf, libwebp
+}:
+let
+  moduleDir = gdk-pixbuf.moduleDir;
+
+  # turning lib/gdk-pixbuf-#.#/#.#.#/loaders into lib/gdk-pixbuf-#.#/#.#.#/loaders.cache
+  # removeSuffix is just in case moduleDir gets a trailing slash
+  loadersPath = (lib.strings.removeSuffix "/" gdk-pixbuf.moduleDir) + ".cache";
+in
+stdenv.mkDerivation rec {
+  pname = "webp-pixbuf-loader";
+  version = "0.0.6";
+
+  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; {
+    description = "WebP GDK Pixbuf Loader library";
+    homepage = "https://github.com/aruiz/webp-pixbuf-loader";
+    license = licenses.lgpl2Plus;
+    platforms = platforms.unix;
+    maintainers = [ maintainers.cwyc ];
+    # meson.build:16:0: ERROR: Program or command 'gcc' not found or not executable
+    broken = stdenv.isDarwin;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -22366,6 +22366,8 @@ with pkgs;
     gtk3 = gtk4;
   };
 
+  webp-pixbuf-loader = callPackage ../development/libraries/webp-pixbuf-loader {};
+
   websocketpp = callPackage ../development/libraries/websocket++ { };
 
   webrtc-audio-processing_1 = callPackage ../development/libraries/webrtc-audio-processing { stdenv = gcc10StdenvCompat; };