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/serverlessrepo/default.nix

@@ -0,0 +1,59 @@
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pytestCheckHook
+, boto3
+, six
+, pyyaml
+, mock
+, pythonOlder
+}:
+
+buildPythonPackage rec {
+  pname = "serverlessrepo";
+  version = "0.1.10";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "671f48038123f121437b717ed51f253a55775590f00fbab6fbc6a01f8d05c017";
+  };
+
+  propagatedBuildInputs = [
+    six
+    boto3
+    pyyaml
+  ];
+
+  checkInputs = [
+    pytestCheckHook
+    mock
+  ];
+
+  postPatch = ''
+    substituteInPlace setup.py \
+      --replace "pyyaml~=5.1" "pyyaml" \
+      --replace "boto3~=1.9, >=1.9.56" "boto3"
+  '';
+
+  pytestFlagsArray = [
+    "tests/unit"
+  ];
+
+  pythonImportsCheck = [
+    "serverlessrepo"
+  ];
+
+  meta = with lib; {
+    homepage = "https://github.com/awslabs/aws-serverlessrepo-python";
+    description = "Helpers for working with the AWS Serverless Application Repository";
+    longDescription = ''
+      A Python library with convenience helpers for working with the
+      AWS Serverless Application Repository.
+    '';
+    license = licenses.asl20;
+    maintainers = with maintainers; [ dhkl ];
+  };
+}