help make port for opencoarrays

[Anton Shterenlikht]

Please help/advise

https://github.com/sourceryinstitute/opencoarrays

It requires mpich built with at least gcc5.3,
more specifically mpif90 built with gcc5.3 or gcc6.
net/mpich has FORTRAN_USES=fortran, which I understand
triggers lang/gcc.

Is it a good idea (or at all possible) to add
an option to net/mpich to choose a particular
gcc version?

Any other advice?

Thanks

Anton