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/cached-property/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pytestCheckHook
+, freezegun
+}:
+
+buildPythonPackage rec {
+  pname = "cached-property";
+  version = "1.5.2";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "9fa5755838eecbb2d234c3aa390bd80fbd3ac6b6869109bfc1b499f7bd89a130";
+  };
+
+  checkInputs = [ pytestCheckHook freezegun ];
+
+  disabledTests = [
+    # https://github.com/pydanny/cached-property/issues/131
+    "test_threads_ttl_expiry"
+  ];
+
+  meta = {
+    description = "A decorator for caching properties in classes";
+    homepage = "https://github.com/pydanny/cached-property";
+    license = lib.licenses.bsd3;
+    platforms = lib.platforms.unix;
+    maintainers = with lib.maintainers; [ ericsagnes ];
+  };
+}