Is it possible to have the code snippets as actual Fortran code in the documentation directory and use .. literalinclude:: ./path/to/source.f90? This avoids repeating the same snippet twice because you can include a subset of a file. Also, we can setup a test which actually runs the code snippet and checks whether it compiles with the latest library version.

Done. Examples are placed under assets/examples. I created an additional workflow that only fpm runs the examples. For the minimal example, I created a workflow for a fixed version (3.7.0) and for the current version (not HEAD) to test the changes in a branch.