Hi, I had a look at this.
The immediate problem is that both libopemmpi40 and libpmix2t64 contain the same file: /usr/lib/x86_64-linux-gnu/libpmix.so.2 And because both packages continue to exist with the same file, this needs an unversioned Conflicts to solve, not a Breaks. It's not great though as it makes libpmix2t64 hard to install. I think this is the original upstream issue which lead to this: https://github.com/open-mpi/ompi/issues/13346 Based on that, I think the "long term" options are: - Rollback pmix to 5.x to remain compatible with openmpi - Package prrte 4.x (as suggested by the upstream issue) - Remove the separate pmix package entirely - Patch the internal version of prrte (I don't know if this is feasible) The first option seems the simplest. Then just wait for upstream to do a release that's compatible with pmix 6.x. James

