PetabImporter does not check for existing amici models in location specified by output_folder arg.

[m-philipps]

Bug description When using the PetabImporter the amici model is re-compiled although it is already available at the location specified by the output_folder argument.

Before compiling the amici model the PetabImporter checks if an amici module is already available, but does not check within subfolders of the current path: https://github.com/ICB-DCM/pyPESTO/blob/ee852cb216a65b12bf2d1e16edc8c0fba6c3e714/pypesto/petab/importer.py#L355-L356 This does not make use of the output_folder argument.

Expected behavior Since by default the amici models are compiled to the folder amici_models/ I would expect those to be found and not recompiled.

[dweindl]

Ideally, the referenced line should also use amici.import_model_module instead of importlib.import_module. The former will also take the output directory as arguments.

[m-philipps]

Ah, nice. There's also a workaround with importlib.machinery.PathFinder() but I supose the amici solution is preferred?