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/effect/default.nix

@@ -0,0 +1,40 @@
+{ buildPythonPackage
+, fetchPypi
+, lib
+, isPy3k
+, six
+, attrs
+, pytest
+, testtools
+}:
+
+buildPythonPackage rec {
+  version = "1.1.0";
+  pname = "effect";
+  disabled = (!isPy3k);
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "7affb603707c648b07b11781ebb793a4b9aee8acf1ac5764c3ed2112adf0c9ea";
+  };
+
+  checkInputs = [
+    pytest
+    testtools
+  ];
+
+  propagatedBuildInputs = [
+    six
+    attrs
+  ];
+
+  checkPhase = ''
+    pytest
+  '';
+
+  meta = with lib; {
+    description = "Pure effects for Python";
+    homepage = "https://github.com/python-effect/effect";
+    license = licenses.mit;
+  };
+}