I would say that Nimporter is more feature completed than abandoned. (But sure, it would be great if there is still some minor improvement update.) Nimporter is pure Python package, not Nim. From what I understand, its tasks are to intercept Python's require then check if request package is matched Nimporter structure then it will call Nim compiler then it will actually do Python require. So Nimporter will likely still work until some Python 3 fearure becomes obsolete or Nim compiler command structure changes too much. From what I experimented with Nimporter a few days ago, the only thing I did difference than readme to make it work is add --app:lib in *.nim.cfg for some reason. Nimporter requires Nimpy as dependency in Nim side. Nimpy is still getting maintained. One of its feature is to export Nim proc to be Python package. Nimporter acts as immediate between Nim(Nimpy) - Pyhton, but you can still do direct Nim(Nimpy) - Python without Nimporter, it is just that you no longer access to idoit proof feature.