PDM does not implement PEP 582, at the time of writing
Note: I’ve updated this to reflect how this happened, on recommendation from PDM’s author. PDM claims to implement PEP 582. However, if you look at what it implements, it is something completely different from the standard. PDM’s file system structure <root> __pypackages__ 3.10 bottle myscript.py PDM will scan for the __pypackages__ directory up to 5 folders above the “current” one. PEP 582’s file system structure <root> __pypackages__ lib python3.10 site-packages bottle myscript.py PEP 582 says that the __pypackages__ directory should be next to the script being executed, and there’s no discovery logic “above” the script. ...