calceph needs sponsor and help

[Attila Kovacs <attipaci@gmail.com>]

Hi Debian Astro,


I'm still looking for a sponsor to review and upload the calceph package 
on salsa:

 https://salsa.debian.org/debian-astro-team/calceph

It has some issues with the arm64 cross build. The build normally 
requires gfortran, which is at the root of the issue. If I set the build 
dependency as `gfortran` then the cross build complains that the 
dependency cannot be met. If instead I set it to `gfortran:native`, then 
the build succeeds, albeit without the fortran modules, and then the 
install fails for the `libcalceph-fortran-dev` sub-package as a result. 
Any advice is welcome on how to fix the cross-compiling of the FORTRAN 
bindings of the library. (Or if it cannot be fixed, maybe we can disable 
the subpackage for non-native platforms -- but I don't know how to do 
that either.)

Thanks for the help in advance,


-- A.