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/promise/default.nix

@@ -0,0 +1,48 @@
+{ buildPythonPackage
+, fetchFromGitHub
+, lib
+, six
+, pytestCheckHook
+, mock
+, pytest-asyncio
+}:
+
+buildPythonPackage rec {
+  pname = "promise";
+  version = "2.3.0";
+
+  src = fetchFromGitHub {
+    owner = "syrusakbary";
+    repo = "promise";
+    rev = "v${version}";
+    sha256 = "17mq1bm78xfl0x1g50ng502m5ldq6421rzz35hlqafsj0cq8dkp6";
+  };
+
+  postPatch = ''
+    substituteInPlace tests/test_extra.py \
+      --replace "assert_exc.traceback[-1].path.strpath" "str(assert_exc.traceback[-1].path)"
+  '';
+
+  propagatedBuildInputs = [
+    six
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    mock
+    pytest-asyncio
+  ];
+
+  disabledTestPaths = [
+    "tests/test_benchmark.py"
+  ];
+
+  meta = with lib; {
+    description = "Ultra-performant Promise implementation in Python";
+    homepage = "https://github.com/syrusakbary/promise";
+    license = licenses.mit;
+    maintainers = with maintainers; [
+      kamadorueda
+    ];
+  };
+}