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/cachelib/default.nix

@@ -0,0 +1,34 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pytest-xprocess
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "cachelib";
+  version = "0.7.0";
+  disabled = pythonOlder "3.6";
+
+  src = fetchFromGitHub {
+    owner = "pallets";
+    repo = pname;
+    rev = "refs/tags/${version}";
+    sha256 = "sha256-/378xNkBZHoTJ9Qs8RTYi+QosLs7GBgMOkIDYOaSH1Y=";
+  };
+
+  checkInputs = [
+    pytest-xprocess
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [ "cachelib" ];
+
+  meta = with lib; {
+    homepage = "https://github.com/pallets/cachelib";
+    description = "Collection of cache libraries in the same API interface";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ gebner ];
+  };
+}