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/ruffus/default.nix

@@ -0,0 +1,47 @@
+{ gevent
+, buildPythonPackage
+, fetchFromGitHub
+, hostname
+, pytest
+, lib, stdenv
+}:
+
+buildPythonPackage rec {
+  pname = "ruffus";
+  version = "2.8.4";
+
+  src = fetchFromGitHub {
+    owner = "cgat-developers";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "0fnzpchwwqsy5h18fs0n90s51w25n0dx0l74j0ka6lvhjl5sxn4c";
+  };
+
+  propagatedBuildInputs = [ gevent ];
+
+  checkInputs = [
+    hostname
+    pytest
+  ];
+
+  # tests very flaky & hang often on darwin
+  doCheck = !stdenv.isDarwin;
+  # test files do indeed need to be executed separately
+  checkPhase = ''
+    pushd ruffus/test
+    rm test_with_logger.py  # spawns 500 processes
+    for f in test_*.py ; do
+      HOME=$TMPDIR pytest -v --disable-warnings $f
+    done
+    popd
+  '';
+  pythonImportsCheck = [ "ruffus" ];
+
+  meta = with lib; {
+    description = "Light-weight Python Computational Pipeline Management";
+    homepage = "http://www.ruffus.org.uk";
+    license = licenses.mit;
+    maintainers = [ maintainers.kiwi ];
+  };
+}
+