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/tools/X11/obconf/default.nix

@@ -0,0 +1,44 @@
+{ lib, stdenv, fetchgit, autoreconfHook, pkg-config, gtk3, openbox,
+  imlib2, libxml2, libstartup_notification, makeWrapper, libSM }:
+
+stdenv.mkDerivation rec {
+  pname = "obconf";
+  version = "unstable-2015-02-13";
+
+  src = fetchgit {
+    url = "git://git.openbox.org/dana/obconf";
+    rev = "63ec47c5e295ad4f09d1df6d92afb7e10c3fec39";
+    sha256 = "sha256-qwm66VA/ueRMFtSUcrmuObNkz+KYgWRnmR7TnQwpxiE=";
+  };
+
+  nativeBuildInputs = [
+    autoreconfHook
+    makeWrapper
+    pkg-config
+  ];
+
+  buildInputs = [
+    gtk3
+    imlib2
+    libSM
+    libstartup_notification
+    libxml2
+    openbox
+  ];
+
+  postPatch = ''
+    substituteInPlace configure.ac --replace 2.0.4 ${version}
+  '';
+
+  postInstall = ''
+    wrapProgram $out/bin/obconf --prefix XDG_DATA_DIRS : ${openbox}/share/
+  '';
+
+  meta = {
+    description = "GUI configuration tool for openbox";
+    homepage = "http://openbox.org/wiki/ObConf";
+    license = lib.licenses.gpl2Plus;
+    maintainers = [ lib.maintainers.sfrijters ];
+    platforms = lib.platforms.linux;
+  };
+}