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/skia-pathops/default.nix

@@ -0,0 +1,43 @@
+{ lib
+, buildPythonPackage
+, cython
+, ninja
+, setuptools-scm
+, setuptools
+, fetchPypi
+, gn
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "skia-pathops";
+  version = "0.7.2";
+
+  src = fetchPypi {
+    pname = "skia-pathops";
+    inherit version;
+    extension = "zip";
+    sha256 = "sha256-Gdhcmv77oVr5KxPIiJlk935jgvWPQsYEC0AZ6yjLppA=";
+  };
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "build_cmd = [sys.executable, build_skia_py, build_dir]" \
+        'build_cmd = [sys.executable, build_skia_py, "--no-fetch-gn", "--no-virtualenv", "--gn-path", "${gn}/bin/gn", build_dir]'
+  '';
+
+  nativeBuildInputs = [ cython ninja setuptools-scm ];
+
+  propagatedBuildInputs = [ setuptools ];
+
+  checkInputs = [ pytestCheckHook ];
+
+  pythonImportsCheck = [ "pathops" ];
+
+  meta = {
+    description = "Python access to operations on paths using the Skia library";
+    homepage = "https://skia.org/dev/present/pathops";
+    license = lib.licenses.bsd3;
+    maintainers = [ lib.maintainers.BarinovMaxim ];
+  };
+}