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/pytest-metadata/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pytest
+, pythonOlder
+, setuptools-scm
+}:
+
+buildPythonPackage rec {
+  pname = "pytest-metadata";
+  version = "2.0.1";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-XNtq7qi6kQkYHPnxScijrhQw/35EUGqPhmr4qYykYwE=";
+  };
+
+  nativeBuildInputs = [ setuptools-scm ];
+  buildInputs = [ pytest ];
+
+  meta = with lib; {
+    description = "Plugin for accessing test session metadata";
+    homepage = "https://github.com/pytest-dev/pytest-metadata";
+    license = licenses.mpl20;
+    maintainers = with maintainers; [ mpoquet ];
+  };
+}