Why this error is happening? (Can't add new modules after the interpreter has been initialized)

[GavinNL]

Hello everyone,

I've been stuck on this problem for a few days now and I cannot seem to figure out a way to fix it. My Google-fu has been coming up empty handed.

I have a shared library libA.so that I am exposing python bindings for. But libA.so doesn't expose the functions itself, it's handled through another shared library that does the indirection libApy.so. All the bindings are performed through lambda functions which redirect the the actual call.

In python, we'd import using import Apy. The shared library dependency looks like this:

libApy.so -> libA.so -> libAs required libraries

Everything has been working fine for months.

I recently added a new feature to libA.so that requires it to be linked with another library libB.so. libB is an external library that has its own shared lib dependencies. so the dependency looks like this:

libApy.so -> libA.so -> libAs required libraries
                     -> libB.so -> libBs required libraries

But now I'm getting this error everytime I try to import Apy

terminate called after throwing an instance of 'std::runtime_error'
  what():  Can't add new modules after the interpreter has been initialized

I'm not even exposing any of the functions libB to the python bindings. Just the fact that libA links to libB is causing this issue.

I am not embedding the interpreter, I'm running from the command line using python3 myscript_that_imports_libA.py.

Running ldd libApy.so shows that all libraries are linked and found correctly.

Any help would be appreciated.
Thanks!