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/dogpile-cache/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, pytestCheckHook
+, mock
+, Mako
+, decorator
+, stevedore
+}:
+
+buildPythonPackage rec {
+  pname = "dogpile-cache";
+  version = "1.1.5";
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    pname = "dogpile.cache";
+    inherit version;
+    sha256 = "0f01bdc329329a8289af9705ff40fadb1f82a28c336f3174e12142b70d31c756";
+  };
+
+  preCheck = ''
+    # Disable concurrency tests that often fail,
+    # probably some kind of timing issue.
+    rm tests/test_lock.py
+    # Failing tests. https://bitbucket.org/zzzeek/dogpile.cache/issues/116
+    rm tests/cache/test_memcached_backend.py
+  '';
+
+  dontUseSetuptoolsCheck = true;
+
+  checkInputs = [ pytestCheckHook mock Mako ];
+
+  propagatedBuildInputs = [ decorator stevedore ];
+
+  meta = with lib; {
+    description = "A caching front-end based on the Dogpile lock";
+    homepage = "https://bitbucket.org/zzzeek/dogpile.cache";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ ];
+  };
+}