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/pymumble/default.nix

@@ -0,0 +1,50 @@
+{ buildPythonPackage
+, fetchFromGitHub
+, isPy27
+, lib
+, opuslib
+, protobuf
+, pytestCheckHook
+, pycrypto
+}:
+
+buildPythonPackage rec {
+  pname = "pymumble";
+  version = "1.6.1";
+  disabled = isPy27;
+
+  src = fetchFromGitHub {
+    owner = "azlux";
+    repo = "pymumble";
+    rev = version;
+    sha256 = "1qbsd2zvwd9ksclgiyrl1z79ms0zximm4527mnmhvq36lykgki7s";
+  };
+
+  postPatch = ''
+    # Changes all `library==x.y.z` statements to just `library`
+    # So that we aren't constrained to a specific version
+    sed -i 's/\(.*\)==.*/\1/' requirements.txt
+  '';
+
+  propagatedBuildInputs = [
+    opuslib
+    protobuf
+  ];
+
+  checkInputs = [
+    pycrypto
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "pymumble_py3"
+    "pymumble_py3.constants"
+  ];
+
+  meta = with lib; {
+    description = "Python 3 version of pymumble, Mumble library used for multiple uses like making mumble bot.";
+    homepage = "https://github.com/azlux/pymumble";
+    license = licenses.gpl3Only;
+    maintainers = with maintainers; [ thelegy infinisil ];
+  };
+}