Comment 5 for bug 1866621

So the issue is not package dependency *ONLY*

on the patch that split the mistral-extra on this line

https://github.com/openstack/mistral/commit/8bdf341af7348d3d092c6523a09df118c51c2a53#diff-6f9508867723a87b92a9fa401a80a1b9L130

the cli.py (which is the basis for the migrate action) no long reads that variable.