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/pantheon/desktop/wingpanel/wrapper.nix

@@ -0,0 +1,61 @@
+{ lib
+, wrapGAppsHook
+, glib
+, stdenv
+, xorg
+, wingpanel
+, wingpanelIndicators
+, switchboard-with-plugs
+, indicators ? null
+  # Only useful to disable for development testing.
+, useDefaultIndicators ? true
+}:
+
+let
+  selectedIndicators =
+    if indicators == null then wingpanelIndicators
+    else indicators ++ (lib.optionals useDefaultIndicators wingpanelIndicators);
+in
+stdenv.mkDerivation rec {
+  pname = "${wingpanel.pname}-with-indicators";
+  inherit (wingpanel) version;
+
+  src = null;
+
+  paths = [
+    wingpanel
+  ] ++ selectedIndicators;
+
+  passAsFile = [ "paths" ];
+
+  nativeBuildInputs = [
+    glib
+    wrapGAppsHook
+  ];
+
+  buildInputs = lib.forEach selectedIndicators (x: x.buildInputs)
+    ++ selectedIndicators;
+
+  dontUnpack = true;
+  dontConfigure = true;
+  dontBuild = true;
+
+  preferLocalBuild = true;
+  allowSubstitutes = false;
+
+  installPhase = ''
+    mkdir -p $out
+    for i in $(cat $pathsPath); do
+      ${xorg.lndir}/bin/lndir -silent $i $out
+    done
+  '';
+
+  preFixup = ''
+    gappsWrapperArgs+=(
+      --set WINGPANEL_INDICATORS_PATH "$out/lib/wingpanel"
+      --set SWITCHBOARD_PLUGS_PATH "${switchboard-with-plugs}/lib/switchboard"
+    )
+  '';
+
+  inherit (wingpanel) meta;
+}