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/packaging/default.nix

@@ -0,0 +1,48 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pyparsing
+, pytestCheckHook
+, pythonOlder
+, pretend
+, setuptools
+}:
+
+let
+  packaging = buildPythonPackage rec {
+    pname = "packaging";
+    version = "21.3";
+    format = "pyproject";
+
+    disabled = pythonOlder "3.6";
+
+    src = fetchPypi {
+      inherit pname version;
+      sha256 = "sha256-3UfEKSfYmrkR5gZRiQfMLTofOLvQJjhZcGQ/nFuOz+s=";
+    };
+
+    nativeBuildInputs = [
+      setuptools
+    ];
+
+    propagatedBuildInputs = [ pyparsing ];
+
+    checkInputs = [
+      pytestCheckHook
+      pretend
+    ];
+
+    # Prevent circular dependency
+    doCheck = false;
+
+    passthru.tests = packaging.overridePythonAttrs (_: { doCheck = true; });
+
+    meta = with lib; {
+      description = "Core utilities for Python packages";
+      homepage = "https://github.com/pypa/packaging";
+      license = with licenses; [ bsd2 asl20 ];
+      maintainers = with maintainers; [ bennofs ];
+    };
+  };
+in
+packaging