Bug#1145118: adios4dolfinx: FTBFS: E ValueError: [Sat Aug 22 10:11:38 2026] [ADIOS2 EXCEPTION] <Core> <IOHDF5> <MakeEngineHDF5> : A serial HDF5 engine cannot be used with a communicator that is MPI-based.

[Francesco Ballarin]

Source: adios4dolfinx
Followup-For: Bug #1145118
Control: tags -1 ftbfs

Hi,
I just uploaded 0.11.0-2 to unstable, which should fix the incompatibility with
the upgrade fenics-dolfinx 0.11.0.

The error

ValueError: [Sat Aug 22 10:11:38 2026] [ADIOS2 EXCEPTION] <Core> <IOHDF5> <MakeEngineHDF5> : A serial HDF5 engine cannot be used with a communicator that is MPI-based

will remain, so the build will not actually succeed, but at least it is "less"
broken now.

As I mentioned in a previous email (with a minimal reproducible example), the
above error is not due to this package, and there is nothing we can do from
here (or at least, nothing I can see for myself).

Thanks for the patience and the reporting,
Francesco