Hi Sebastian, Thanks for your bug report, and sorry it took that long to address.
In many of the OpenStack team packages, I was able to simply remove python3-crypto, and it built fine. But in that one, when I remove it, or replace it by python3-pycryptodome (as you suggested), the package fails to build. So I don't think python3-pycryptodome is a "drop-in" replacement as you wrote. Any suggestion for that particular package? Cheers, Thomas Goirand (zigo)
