proposal error (undefined symbol)

[sjoerd-bouma]

The tests currently fail because of an issue with proposal 7.5.1. The installation of proposal does not raise an error, but subsequently importing anything relying on proposal fails with and undefined symbol error. Example below:

WARNING: autodoc: failed to import module 'NuRadioProposal' from module 'NuRadioMC.EvtGen'; the following exception was raised:
/opt/hostedtoolcache/Python/3.7.17/x64/lib/python3.7/site-packages/proposal.cpython-37m-x86_64-linux-gnu.so: undefined symbol: _ZN5boost10filesystem4pathdVERKS1_

It's not clear to me if this is a python 3.7 exclusive issue or due to some updated dependency of proposal, I can't reproduce this on Ubuntu 22.04 and python 3.10.12. I also do not know of a workaround.

[sjoerd-bouma]

Perhaps unsurprisingly, considering the issue occurs in a compiled .so object, but no NuRadioMC dependencies nor the Python version have changed between the last successful run and first occurrence of this error. On the other hand, the proposal wheel took much longer to build and has a different size, so my guess would be the issue is caused by some updated proposal dependency.

[sjoerd-bouma]

Opened an issue on the proposal github: tudo-astroparticlephysics/PROPOSAL#377

[Jean1995]

Which one is the action where proposal has been re-built and stopped working?

[Jean1995]

I believe something has changed about the boost package provided by conan. I've just realized that our CI isn't working anymore as well.