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/cliff/default.nix

@@ -0,0 +1,68 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, autopage
+, cmd2
+, installShellFiles
+, openstackdocstheme
+, pbr
+, prettytable
+, pyparsing
+, pyyaml
+, stevedore
+, sphinx
+, callPackage
+}:
+
+buildPythonPackage rec {
+  pname = "cliff";
+  version = "3.10.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-BFruPzxkRxll161QfOhHSk4vIIFfu1QFp3D4WWoqAKA=";
+  };
+
+  postPatch = ''
+    # only a small portion of the listed packages are actually needed for running the tests
+    # so instead of removing them one by one remove everything
+    rm test-requirements.txt
+  '';
+
+  nativeBuildInputs = [
+    installShellFiles
+    openstackdocstheme
+    sphinx
+  ];
+
+  propagatedBuildInputs = [
+    autopage
+    cmd2
+    pbr
+    prettytable
+    pyparsing
+    pyyaml
+    stevedore
+  ];
+
+  postInstall = ''
+    sphinx-build -a -E -d doc/build/doctrees -b man doc/source doc/build/man
+    installManPage doc/build/man/cliff.1
+  '';
+
+  # check in passthru.tests.pytest to escape infinite recursion with stestr
+  doCheck = false;
+
+  pythonImportsCheck = [ "cliff" ];
+
+  passthru.tests = {
+    pytest = callPackage ./tests.nix { };
+  };
+
+  meta = with lib; {
+    description = "Command Line Interface Formulation Framework";
+    homepage = "https://github.com/openstack/cliff";
+    license = licenses.asl20;
+    maintainers = teams.openstack.members;
+  };
+}