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-xsl/default.nix

@@ -0,0 +1,52 @@
+{ lib, stdenv
+, gettext
+, fetchurl
+, pkg-config
+, itstool
+, libxml2
+, libxslt
+, gnome
+}:
+
+stdenv.mkDerivation rec {
+  pname = "yelp-xsl";
+  version = "42.0";
+
+  src = fetchurl {
+    url = "mirror://gnome/sources/yelp-xsl/${lib.versions.major version}/${pname}-${version}.tar.xz";
+    sha256 = "sha256-KbJzzAvRbvtumDRDgD8en9wDUR5cT/Y0j9MKYE1NyEY=";
+  };
+
+  nativeBuildInputs = [
+    pkg-config
+    gettext
+    itstool
+    libxml2
+    libxslt
+  ];
+
+  doCheck = true;
+
+  passthru = {
+    updateScript = gnome.updateScript {
+      packageName = pname;
+      attrPath = "gnome.${pname}";
+    };
+  };
+
+  meta = with lib; {
+    homepage = "https://wiki.gnome.org/Apps/Yelp";
+    description = "Yelp's universal stylesheets for Mallard and DocBook";
+    maintainers = teams.gnome.members;
+    license = with licenses; [
+      # See https://gitlab.gnome.org/GNOME/yelp-xsl/blob/master/COPYING
+      # Stylesheets
+      lgpl2Plus
+      # Icons, unclear: https://gitlab.gnome.org/GNOME/yelp-xsl/issues/25
+      gpl2
+      # highlight.js
+      bsd3
+    ];
+    platforms = platforms.unix;
+  };
+}