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/pydeps/default.nix

@@ -0,0 +1,60 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, graphviz
+, stdlib-list
+, pytestCheckHook
+, pythonOlder
+, pyyaml
+}:
+
+buildPythonPackage rec {
+  pname = "pydeps";
+  version = "1.10.18";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "thebjorn";
+    repo = pname;
+    rev = "v${version}";
+    hash = "sha256-AKpaGXUaKCVk1C8GqtWayZEU2xbz3eqbUenjZCtsAUY=";
+  };
+
+  buildInputs = [
+    graphviz
+  ];
+
+  propagatedBuildInputs = [
+    graphviz
+    stdlib-list
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    pyyaml
+  ];
+
+  postPatch = ''
+    # Path is hard-coded
+    substituteInPlace pydeps/dot.py \
+      --replace "dot -Gstart=1" "${lib.makeBinPath [ graphviz ]}/dot -Gstart=1"
+  '';
+
+  disabledTests = [
+    # Would require to have additional modules available
+    "test_find_package_names"
+  ];
+
+  pythonImportsCheck = [
+    "pydeps"
+  ];
+
+  meta = with lib; {
+    description = "Python module dependency visualization";
+    homepage = "https://github.com/thebjorn/pydeps";
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ fab ];
+  };
+}