Failing to build MPI application, missing MPI runner

[Carltoffel]

Description

I want to build an MPI application, but there is no MPI runner on the login node because you have to submit a sbatch job.
I can fpm test my program (and I assume the same goes for fpm run) if I replace this function call with my sbatch runner.
But when using fpm build, a runner shouldn't be necessary. fpm build terminates before it starts compiling anything with the following error message:

<ERROR> *cmd_build* Model error: cannot find a valid mpi runner command

Expected Behaviour

fpm build shouldn't require an MPI runner in the path.

Version of fpm

0.9.0, 6d33e74

Platform and Architecture

Rocky Linux 8.7 (Green Obsidian)

Additional Information

GNU Fortran (GCC) 11.3.0
OpenMPI 4.1.4

Edit: I did some changes to fpm which affected the behaviour I described. Therefore, I fixed the description of symptoms.

[Carltoffel]

After some more testing I realized, that fpm test (and probably fpm run, too) don't work, even if I provide the runner with the --runner option.

[perazz]

Solved by #937