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/readme_renderer/default.nix

@@ -0,0 +1,64 @@
+{ lib
+, bleach
+, buildPythonPackage
+, cmarkgfm
+, docutils
+, fetchPypi
+, mock
+, pygments
+, pytestCheckHook
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "readme-renderer";
+  version = "35.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    pname = "readme_renderer";
+    inherit version;
+    sha256 = "sha256-pyeZms/CIvwh2CoS7UjJV8SYl4XlhlgHxlpIfSFndJc=";
+  };
+
+  propagatedBuildInputs = [
+    bleach
+    cmarkgfm
+    docutils
+    pygments
+  ];
+
+  checkInputs = [
+    mock
+    pytestCheckHook
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "cmarkgfm>=0.5.0,<0.7.0" "cmarkgfm>=0.5.0,<1"
+  '';
+
+  disabledTests = [
+    # https://github.com/pypa/readme_renderer/issues/221
+    "test_GFM_"
+    # Relies on old distutils behaviour removed by setuptools (TypeError: dist must be a Distribution instance)
+    "test_valid_rst"
+    "test_invalid_rst"
+    "test_malicious_rst"
+    "test_invalid_missing"
+    "test_invalid_empty"
+  ];
+
+  pythonImportsCheck = [
+    "readme_renderer"
+  ];
+
+  meta = with lib; {
+    description = "Python library for rendering readme descriptions";
+    homepage = "https://github.com/pypa/readme_renderer";
+    license = with licenses; [ asl20 ];
+    maintainers = with maintainers; [ fab ];
+  };
+}