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/python-barcode/default.nix

@@ -0,0 +1,51 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, setuptools-scm
+, pillow
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "python-barcode";
+  version = "0.14.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.6";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "sha256-JBs0qlxctqmImIL5QJsBgpA6LF0ZtCGL42Cc271f/fk=";
+  };
+
+  propagatedBuildInputs = [
+    setuptools-scm
+  ];
+
+  passthru.optional-dependencies = {
+    images = [
+      pillow
+    ];
+  };
+
+  postPatch = ''
+    substituteInPlace setup.cfg \
+      --replace "--cov=barcode" "" \
+      --replace "--cov-report=term-missing:skip-covered" "" \
+      --replace "--no-cov-on-fail" ""
+  '';
+
+  checkInputs = [
+    pytestCheckHook
+  ] ++ passthru.optional-dependencies.images;
+
+  pythonImportsCheck = [ "barcode" ];
+
+  meta = with lib; {
+    description = "Create standard barcodes with Python";
+    homepage = "https://github.com/WhyNotHugo/python-barcode";
+    license = licenses.mit;
+    maintainers = with maintainers; [ wolfangaukang ];
+  };
+}