i'm still super stumped on our other problem with some users being able to launch airflow.pex and others not... although PEX_ROOT=/tmp/.pex seems to be a suitable solution until we can get to the bottom of this issue. My problem with that is I'm not sure what sort of diagnostic information I can gather to get to the bottom of it. I've grabbed straces from working vs. non-working, but I'm not sure if that will provide the level of detail it's going to take.