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/aiocron/default.nix

@@ -0,0 +1,46 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, python
+, croniter
+, tzlocal
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "aiocron";
+  version = "1.8";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-SFRlE/ry63kB5lpk66e2U8gBBu0A7ZyjQZw9ELZVWgE=";
+  };
+
+  propagatedBuildInputs = [
+    croniter
+    tzlocal
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    tzlocal
+  ];
+
+  postPatch = ''
+    sed -i "/--cov/d" setup.cfg
+    sed -i "/--ignore/d" setup.cfg
+  '';
+
+  postInstall = ''
+    rm -rf $out/${python.sitePackages}/tests
+  '';
+
+  pythonImportsCheck = [ "aiocron" ];
+
+  meta = with lib; {
+    description = "Crontabs for asyncio";
+    homepage = "https://github.com/gawel/aiocron/";
+    license = licenses.mit;
+    maintainers = [ maintainers.starcraft66 ];
+  };
+}