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/gaphas/default.nix

@@ -0,0 +1,45 @@
+{ lib
+, buildPythonPackage
+, pythonOlder
+, fetchPypi
+, poetry-core
+, gobject-introspection
+, gtk3
+, pycairo
+, pygobject3
+, typing-extensions
+}:
+
+buildPythonPackage rec {
+  pname = "gaphas";
+  version = "3.6.0";
+  disabled = pythonOlder "3.7";
+
+  format = "pyproject";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-yleYbAJdDVzZrMQ3izi9UX3Ji1vIuQDc+RK5+wzrMi4=";
+  };
+
+  nativeBuildInputs = [
+    poetry-core
+  ];
+
+  buildInputs = [ gobject-introspection gtk3 ];
+
+  propagatedBuildInputs = [
+    pycairo
+    pygobject3
+    typing-extensions
+  ];
+
+  pythonImportsCheck = [ "gaphas" ];
+
+  meta = with lib; {
+    description = "GTK+ based diagramming widget";
+    maintainers = with maintainers; [ wolfangaukang ];
+    homepage = "https://github.com/gaphor/gaphas";
+    license = licenses.asl20;
+  };
+}