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/tinycss2/default.nix

@@ -0,0 +1,41 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchFromGitHub
+, webencodings
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "tinycss2";
+  version = "1.1.0";
+  disabled = pythonOlder "3.5";
+  format = "flit";
+
+  src = fetchFromGitHub {
+    owner = "kozea";
+    repo = "tinycss2";
+    rev = "v${version}";
+    # for tests
+    fetchSubmodules = true;
+    sha256 = "sha256-WA88EYolL76WqeA1UKR3Sfw11j8NuOGOxPezujYizH8=";
+  };
+
+  propagatedBuildInputs = [ webencodings ];
+
+  checkInputs = [
+    pytestCheckHook
+  ];
+
+  postPatch = ''
+    substituteInPlace pyproject.toml \
+      --replace "'pytest-cov', 'pytest-flake8', 'pytest-isort', 'coverage[toml]'" "" \
+      --replace "--isort --flake8 --cov" ""
+  '';
+
+  meta = with lib; {
+    description = "Low-level CSS parser for Python";
+    homepage = "https://github.com/Kozea/tinycss2";
+    license = licenses.bsd3;
+  };
+}