Package: mpich Followup-For: Bug #1004556 My guess is that this bug is ongoing in 4.0-2 because of pmix support.
4.0-2 is still configured --with-pmix=/usr/lib/x86_64-linux-gnu/pmix2 and still Depends: libpmix2 (>= 4.1.2) pmix support was added in 4.0~b1-2 along with ucx. I gather ucx was deactivated in 4.0-2 but pmix was not. Looks like pmix also needs to go (unless the problem is ch4, which was also added in 4.0~b1-2). But the error message references PMIX. Ironically, I find that an executable compiled against mpich 4.0-1 fails with mpiexec.mpich (as raised in this bug) but actually passes when run with mpiexec.openmpi. Awkward.
