Whoops, my email client messed up the formatting :/ Here's the reply without the quotes: Looking at some package stats for pyenv[1], we see a usage of 3,4%. I think that is a big enough number. pyenv does have another usage, which is managing custom Python interpreters, which is mainly used in CPython development, but I'd say that only a small percentage of the users use it uniquely for that. We can also look directly at the python36 and python37 packages reported, which users might be getting from the AUR or user repos. python37 has 1.18% [2] python36 has 1.63% [3] The main reason why the packages might be required, as I explained in the original email, is for package testing. It puts every maintainer and most contributors to projects that target Python 3.6 or 3.7 in need of an interpreter. Most open source Python project target at least a few different Python versions. These metrics are not perfect by any means, but I do think they present relevant enough data to show an existent need. [1] https://pkgstats.archlinux.de/api/packages/pyenv [2] https://pkgstats.archlinux.de/api/packages/python36 [3] https://pkgstats.archlinux.de/api/packages/python37 Cheers, Filipe Laíns