uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/desktops/gnome/core/yelp/default.nix

@@ -0,0 +1,66 @@
+{ lib
+, stdenv
+, gettext
+, fetchurl
+, webkitgtk
+, pkg-config
+, gtk3
+, libhandy
+, glib
+, gnome
+, sqlite
+, itstool
+, libxml2
+, libxslt
+, gst_all_1
+, wrapGAppsHook
+}:
+
+stdenv.mkDerivation rec {
+  pname = "yelp";
+  version = "42.1";
+
+  src = fetchurl {
+    url = "mirror://gnome/sources/yelp/${lib.versions.major version}/${pname}-${version}.tar.xz";
+    sha256 = "sha256-JbEUarhUmIilqNoGf2O0cLDw+AC2roicrNEU0B1xO0E=";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+    gettext
+    itstool
+    wrapGAppsHook
+  ];
+
+  buildInputs = [
+    gtk3
+    libhandy
+    glib
+    webkitgtk
+    sqlite
+    libxml2
+    libxslt
+    gnome.yelp-xsl
+    gnome.adwaita-icon-theme
+    gst_all_1.gst-plugins-base
+    gst_all_1.gst-plugins-good
+  ];
+
+  # To reduce the GNOME ISO closure size.  Remove when other packages
+  # are using webkit2gtk_4_1.
+  configureFlags = ["--with-webkit2gtk-4-0"];
+
+  passthru = {
+    updateScript = gnome.updateScript {
+      packageName = "yelp";
+    };
+  };
+
+  meta = with lib; {
+    homepage = "https://wiki.gnome.org/Apps/Yelp";
+    description = "The help viewer in Gnome";
+    maintainers = teams.gnome.members;
+    license = licenses.gpl2;
+    platforms = platforms.linux;
+  };
+}