Installing Fortran module files

I recall reading several discussions on this topic in the comp.lang.fortran archives. I’ve tried to filter out some of the ones that might be relevant:

These are just from the period 2016-2021 and there are likely many older threads too.

If we could come up with a good set of guidelines (and publish them at fortran-lang.org) I believe it would go a long way to improve the accessibility/ease of use of Fortran libraries.