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/click-completion/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, isPy27
+
+# propagates
+, click
+, jinja2
+, shellingham
+, six
+}:
+
+buildPythonPackage rec {
+  pname = "click-completion";
+  version = "0.5.2";
+  disabled = isPy27;
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "5bf816b81367e638a190b6e91b50779007d14301b3f9f3145d68e3cade7bce86";
+  };
+
+  propagatedBuildInputs = [
+    click
+    jinja2
+    shellingham
+    six
+  ];
+
+  pythonImportsCheck = [
+    "click_completion"
+  ];
+
+  # has no tests
+  doCheck = false;
+
+  meta = with lib; {
+    description = "Add or enhance bash, fish, zsh and powershell completion in Click";
+    homepage = "https://github.com/click-contrib/click-completion";
+    license = licenses.mit;
+    maintainers = with maintainers; [ mbode ];
+  };
+}