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/approvaltests/default.nix

@@ -0,0 +1,63 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+
+# propagates
+, allpairspy
+, beautifulsoup4
+, empty-files
+, pyperclip
+, pytest
+
+# tests
+, numpy
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  version = "5.2.0";
+  pname = "approvaltests";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6.1";
+
+  # no tests included in PyPI tarball
+  src = fetchFromGitHub {
+    owner = "approvals";
+    repo = "ApprovalTests.Python";
+    rev = "refs/tags/v${version}";
+    sha256 = "sha256-PrO6NC+ARv0o1KHv+ekPwkEi4VpBIj+YjWRrCSFMHI8=";
+  };
+
+  propagatedBuildInputs = [
+    allpairspy
+    beautifulsoup4
+    empty-files
+    pyperclip
+    pytest
+  ];
+
+  checkInputs = [
+    numpy
+    pytestCheckHook
+  ];
+
+  disabledTests = [
+    # tests expects paths below ApprovalTests.Python directory
+    "test_received_filename"
+    "test_pytest_namer"
+  ];
+
+  pythonImportsCheck = [
+    "approvaltests.approvals"
+    "approvaltests.reporters.generic_diff_reporter_factory"
+  ];
+
+  meta = with lib; {
+    description = "Assertion/verification library to aid testing";
+    homepage = "https://github.com/approvals/ApprovalTests.Python";
+    license = licenses.asl20;
+    maintainers = [ maintainers.marsam ];
+  };
+}