On Apr 27, 2017, at 06:21 AM, Donald Stufft wrote: >For whatever it’s worth, at some point in time I plan on attempting to >formalize the Debian solution (or something akin to it) within a PEP and try >to get baked in support for it in Python. > >I also feel required to point out that ``sudo pip uninstall`` isn’t always >enough, because while the two systems install to different locations, pip >currently will uninstall the files in /usr when installing to >/usr/local. They’ve patched their copy of pip to refuse to uninstall files >from /usr, but upstream pip will still do it. Again, something I hope to get >sorted at some point (and of course, an upgrade totally restores the files in >/usr).
Also note that `pip install` defaults to --user in Debian, and that alleviates a lot of the "well that didn't work, let me add sudo" urges. Upstream, this bug tracks that, although it's long standing without much recent progress: https://github.com/pypa/pip/issues/1668 IMHO, that's the right direction to go, and I think Donald is philosophically aligned (apologies if I'm misreading that, DS!). There are of course plenty of knock-on issues to work out, which is probably why that issue is still open. Defaulting to --user won't solve all the problems but I think it's very much a step in the right direction. Even with this, over in Debuntu-land we sometimes still see bug reports from people who were confused by importing an unexpected version of a package, and not remembering (or knowing) that some third party version outside of the archive had been installed, and /usr/local/lib does come before /usr/lib in sys.path. This lead to https://bugs.python.org/issue29546 which will be in 3.7 and should at least help in debugging such situations. Cheers, -Barry
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