py27-h5py 2.8.0_2 fails to build

[dstrubbe (David Strubbe)]

I am trying to upgrade from py27-h5py @2.8.0_1, without any variants in new or old, and get this error in building:

In file included from /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-h5py/py27-h5py/work/h5py-2.8.0/h5py/defs.c:660:
In file included from ./h5py/api_compat.h:27:
In file included from /opt/local/include/hdf5.h:22:
/opt/local/include/H5public.h:60:13: fatal error: 'mpi.h' file not found
#   include <mpi.h>
            ^~~~~~~
1 warning and 1 error generated.

This block occurred earlier:

********************************************************************************
                       Summary of the h5py configuration
    Path to HDF5: None
    HDF5 Version: '1.10.4'
     MPI Enabled: False
Rebuild Required: True
********************************************************************************

I have various MPI ports installed, although this block suggests it is not finding them in configure. I have hdf5 @1.10.4_0+cxx+fortran+gfortran+hl+mpich installed.