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/expiringdict/default.nix

@@ -0,0 +1,44 @@
+{ lib
+, buildPythonApplication
+, fetchFromGitHub
+, dill
+, coverage
+, coveralls
+, mock
+, nose
+}:
+
+buildPythonApplication rec {
+  pname = "expiringdict";
+  version = "1.2.1";
+
+  # use fetchFromGitHub instead of fetchPypi because the test suite of
+  # the package is not included into the PyPI tarball
+  src = fetchFromGitHub {
+    owner = "mailgun";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "07g1vxznmim78bankfl9brr01s31sksdcpwynq1yryh6xw9ri5xs";
+  };
+
+  checkInputs = [
+    dill
+    coverage
+    coveralls
+    mock
+    nose
+  ];
+
+  checkPhase = ''
+    nosetests -v --with-coverage --cover-package=expiringdict
+  '';
+
+  pythonImportsCheck = [ "expiringdict" ];
+
+  meta = with lib; {
+    description = "Dictionary with auto-expiring values for caching purposes";
+    homepage = "https://pypi.org/project/expiringdict/";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ gravndal ];
+  };
+}