No, the problem was that python[.exe] would load pythonXY.dll etc. from the working directory instead of the installation. Edit: I also recall issues with whee

No, the problem was that python[.exe] would load pythonXY.dll etc. from the working directory instead of the installation. Edit: I also recall issues with wheels where .so's in unexpected locations would take preference over the .so files shipped by the wheel. I believe most of that should be fixed nowadays with auditwheel and hardcoded rpaths.