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/pytest-flake8/default.nix

@@ -0,0 +1,38 @@
+{lib, buildPythonPackage, fetchPypi, pythonOlder, fetchpatch, pytest, flake8}:
+
+buildPythonPackage rec {
+  pname = "pytest-flake8";
+  version = "1.0.7";
+
+  disabled = pythonOlder "3.5";
+
+  # although pytest is a runtime dependency, do not add it as
+  # propagatedBuildInputs in order to allow packages depend on another version
+  # of pytest more easily
+  checkInputs = [ pytest ];
+  propagatedBuildInputs = [ flake8 ];
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "f0259761a903563f33d6f099914afef339c085085e643bee8343eb323b32dd6b";
+  };
+
+  # see https://github.com/tholo/pytest-flake8/pull/82/commits
+  patches = [
+    (fetchpatch {
+      url = "https://github.com/tholo/pytest-flake8/commit/eda4ef74c0f25b856fe282742ea206b21e94c24c.patch";
+      sha256 = "0kq0wshds00rk6wvkn6ccjrjyqxg7m9l7dlyaqw974asizw6byci";
+    })
+  ];
+
+  checkPhase = ''
+    pytest .
+  '';
+
+  meta = {
+    description = "py.test plugin for efficiently checking PEP8 compliance";
+    homepage = "https://github.com/tholo/pytest-flake8";
+    maintainers = with lib.maintainers; [ jluttine ];
+    license = lib.licenses.bsd2;
+  };
+}