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/oslo-utils/default.nix

@@ -0,0 +1,79 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, ddt
+, debtcollector
+, eventlet
+, fixtures
+, iso8601
+, netaddr
+, netifaces
+, oslo-i18n
+, oslotest
+, packaging
+, pbr
+, pyparsing
+, pytz
+, stestr
+, testscenarios
+, pyyaml
+, iana-etc
+, libredirect
+}:
+
+buildPythonPackage rec {
+  pname = "oslo-utils";
+  version = "4.13.0";
+
+  src = fetchPypi {
+    pname = "oslo.utils";
+    inherit version;
+    sha256 = "sha256-RbqKql7QVqjo5GBZ75PVwte5yZvHSA42HPV4Pkfyj7o=";
+  };
+
+  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 = [ pbr ];
+
+  propagatedBuildInputs = [
+    debtcollector
+    iso8601
+    netaddr
+    netifaces
+    oslo-i18n
+    packaging
+    pyparsing
+    pytz
+  ];
+
+  checkInputs = [
+    ddt
+    eventlet
+    fixtures
+    oslotest
+    stestr
+    testscenarios
+    pyyaml
+  ];
+
+  checkPhase = ''
+    echo "nameserver 127.0.0.1" > resolv.conf
+    export NIX_REDIRECTS=/etc/protocols=${iana-etc}/etc/protocols:/etc/resolv.conf=$(realpath resolv.conf)
+    export LD_PRELOAD=${libredirect}/lib/libredirect.so
+
+    stestr run
+  '';
+
+  pythonImportsCheck = [ "oslo_utils" ];
+
+  meta = with lib; {
+    description = "Oslo Utility library";
+    homepage = "https://github.com/openstack/oslo.utils";
+    license = licenses.asl20;
+    maintainers = teams.openstack.members;
+  };
+}