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/tools/reno/default.nix

@@ -0,0 +1,58 @@
+{ lib
+, git
+, gnupg1
+, python3Packages
+}:
+
+with python3Packages; buildPythonApplication rec {
+  pname = "reno";
+  version = "3.1.0";
+
+  # Must be built from python sdist because of versioning quirks
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "2510e3aae4874674187f88f22f854e6b0ea1881b77039808a68ac1a5e8ee69b6";
+  };
+
+  propagatedBuildInputs = [
+    dulwich
+    pbr
+    pyyaml
+    setuptools  # required for finding pkg_resources at runtime
+  ];
+
+  checkInputs = [
+    # Python packages
+    pytestCheckHook
+    docutils
+    fixtures
+    sphinx
+    testtools
+    testscenarios
+
+    # Required programs to run all tests
+    git
+    gnupg1
+  ];
+
+  # remove b/c doesn't list all dependencies, and requires a few packages not in nixpkgs
+  postPatch = ''
+    rm test-requirements.txt
+  '';
+
+  disabledTests = [
+    "test_build_cache_db" # expects to be run from a git repository
+  ];
+
+  # verify executable
+  postCheck = ''
+    $out/bin/reno -h
+  '';
+
+  meta = with lib; {
+    description = "Release Notes Manager";
+    homepage = "https://docs.openstack.org/reno/latest";
+    license = licenses.asl20;
+    maintainers = with maintainers; [ drewrisinger guillaumekoenig ];
+  };
+}