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/whispers/default.nix

@@ -0,0 +1,65 @@
+{ lib
+, astroid
+, beautifulsoup4
+, buildPythonPackage
+, fetchFromGitHub
+, jproperties
+, luhn
+, lxml
+, pytest-mock
+, pytestCheckHook
+, python-Levenshtein
+, pythonOlder
+, pyyaml
+}:
+
+buildPythonPackage rec {
+  pname = "whispers";
+  version = "1.5.3";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchFromGitHub {
+    owner = "Skyscanner";
+    repo = pname;
+    rev = version;
+    hash = "sha256-jruUGyoZCyMu015QKtlvfx5WRMfxo/eYUue9wUIWb6o=";
+  };
+
+  propagatedBuildInputs = [
+    astroid
+    beautifulsoup4
+    jproperties
+    luhn
+    lxml
+    python-Levenshtein
+    pyyaml
+  ];
+
+  checkInputs = [
+    pytest-mock
+    pytestCheckHook
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace '"pytest-runner"' ""
+  '';
+
+  preCheck = ''
+    # Some tests need the binary available in PATH
+    export PATH=$out/bin:$PATH
+  '';
+
+  pythonImportsCheck = [
+    "whispers"
+  ];
+
+  meta = with lib; {
+    description = "Tool to identify hardcoded secrets in static structured text";
+    homepage = "https://github.com/Skyscanner/whispers";
+    license = with licenses; [ asl20 ];
+    maintainers = with maintainers; [ fab ];
+  };
+}