git-remote-codecommit: fix build

- Don't call from a different scope
- Disable catching of conflicts because we do get a (installation-time
only) conflict due to overrides in awscli.

pkgs/applications/version-management/git-and-tools/git-remote-codecommit/default.nix

@@ -1,11 +1,19 @@
-{ lib, buildPythonApplication, fetchFromGitHub, isPy3k, botocore, pytest, mock
-, flake8, tox, awscli }:
+{ lib, fetchFromGitHub, python3Packages, awscli }:
+
+with python3Packages;
 
 buildPythonApplication rec {
   pname = "git-remote-codecommit";
   version = "1.15.1";
   disabled = !isPy3k;
 
+  # The check dependency awscli has some overrides
+  # which yield a different botocore.
+  # This results in a duplicate version during installation
+  # of the wheel, even though it does not matter
+  # because it is only a test dependency.
+  catchConflicts = false;
+
   src = fetchFromGitHub {
     owner = "aws";
     repo = pname;