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/applications/window-managers/xmonad/wrapper.nix

@@ -0,0 +1,21 @@
+{ stdenv, ghcWithPackages, xmessage, makeWrapper, packages }:
+
+let
+xmonadEnv = ghcWithPackages (self: [ self.xmonad ] ++ packages self);
+in stdenv.mkDerivation {
+  pname = "xmonad-with-packages";
+  inherit (xmonadEnv) version;
+
+  nativeBuildInputs = [ makeWrapper ];
+
+  buildCommand = ''
+    install -D ${xmonadEnv}/share/man/man1/xmonad.1.gz $out/share/man/man1/xmonad.1.gz
+    makeWrapper ${xmonadEnv}/bin/xmonad $out/bin/xmonad \
+      --set NIX_GHC "${xmonadEnv}/bin/ghc" \
+      --set XMONAD_XMESSAGE "${xmessage}/bin/xmessage"
+  '';
+
+  # trivial derivation
+  preferLocalBuild = true;
+  allowSubstitutes = false;
+}