The buildd status page for mpi4py shows some failed builds ( https://buildd.debian.org/status/package.php?p=mpi4py). While none of these are new (i.e., they also failed for 1.2.2-3), I think many of these are caused by a mismatch between the control & rules.
In particular, the package build depends on 'mpi-default-bin' ( http://packages.debian.org/sid/mpi-default-bin) which depends on openmpi-bin for most platforms and mpich2 on others.... But debian/rules has an explicit dependency on openmpi. I wonder if we couldn't just say --mpicc=/usr/bin/mpicc (i.e., unset MPI) to fix the build process on the other platforms?
