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> 1. so, would it means that on Debian derivatives, binary python packages are not functional unless one, after `pip install --user` modify by hand the environment? > how the others (rhel/fedora) can make it work and cannot be replicated by the pip install process? This has a complicated answer, that I don't know if I can give a good summary to beyond showing it (as I think this also gets down into the fundamental differences about where Debian and RHEL place things), but this comes down to how [different OS define and treat the user site](https://packaging.python.org/en/latest/tutorials/installing-packages/#installing-to-the-user-site). I would also highly recommend reading the [`pip` docs segment on user installs](https://pip.pypa.io/en/latest/user_guide/#user-installs) which highlights this further. In general I personally recommend avoiding `--user` installs and just setting up a default virtual environment (e.g. create a virtual environment and then activate it in your shell's profile or in a more specific case [add its `bin` to `PATH` so it will get activated by default](https://gitlab.cern.ch/atlas-amglab/atlstats/-/blob/fee7c8bf9ea1adc7d16a2b765c45541d51adb904/root-base/Dockerfile#L11-12)). It also makes it far easier to reason about what is actually happening as you can be assured that you're using the Python you think you are. > 2. i see that i already answered above :) Hm. This is strange given that you have sufficient versions, yet they are not being found. My suggestion is that you replicate this error in a Docker build in `ubuntu:20.04` or in an interactive session in `ubuntu:20.04` (maybe where you are _not_ root at `pip install` time so that the `--user` flags will actually matter?) and that there will be an easy to reason about environment. -- Reply to this email directly or view it on GitHub: https://github.com/xrootd/xrootd/issues/1668#issuecomment-1087780607 You are receiving this because you are subscribed to this thread. Message ID: <[log in to unmask]> ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-DEV list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-DEV&A=1