Manifest dependency cycle does not generate a clear error.

[jezogwza]

Is this a bug report or feature request? (choose one): BUG

Python Version (output of python --version):

Development or Deployment Environment?:

Release Tag or Master:

Expected Behavior:

What Actually Happened:

How to Reproduce the Issue (as minimally as possible):

Any Additional Comments:

[gardlt]

could you provide the error you are getting?

[mark-burnett]

This can be easily reproduced by having a chart definition depend on itself. If you don't want to implement your own cycle detection, you may want to consider using https://networkx.github.io/ for that.

This is exposed by buggy configuration referred to in att-comdev/promenade#47