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/development/python-modules/bedup/default.nix

@@ -0,0 +1,42 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, btrfs-progs
+, contextlib2
+, pyxdg
+, pycparser
+, alembic
+, cffi
+, pythonOlder
+, isPyPy
+}:
+
+buildPythonPackage rec {
+  version = "0.10.1";
+  pname = "bedup";
+  disabled = pythonOlder "3.3";
+
+  src = fetchFromGitHub {
+    owner = "g2p";
+    repo = "bedup";
+    rev = "v${version}";
+    sha256 = "0sp8pmjkxcqq0alianfp41mwq7qj10rk1qy31pjjp9kiph1rn0x6";
+  };
+
+  buildInputs = [ btrfs-progs ];
+  propagatedBuildInputs = [ contextlib2 pyxdg pycparser alembic ]
+    ++ lib.optionals (!isPyPy) [ cffi ];
+
+  meta = with lib; {
+    description = "Deduplication for Btrfs";
+    longDescription = ''
+      Deduplication for Btrfs. bedup looks for new and changed files,
+      making sure that multiple copies of identical files share space
+      on disk. It integrates deeply with btrfs so that scans are
+      incremental and low-impact.
+    '';
+    homepage = "https://github.com/g2p/bedup";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ bluescreen303 ];
+  };
+}