Sorry somehow missed Steve Dower's post: that discussion is mostly happening at https://discuss.python.org/t/pep-582-python-local-packages-directory/963/
I"ll go there to comment. -CHB On Thu, Apr 4, 2019 at 9:02 AM Chris Barker - NOAA Federal < chris.bar...@noaa.gov> wrote: > > > I'd like to raise a potential edge case that might be a problem, and > likely an increasingly common one: users with multiple installations of the > *same* version of Python. > > I would suggest that that use case is best addressed by a system that > isolates the entire python environment, such as conda. > > > This is actually a common setup for Windows users who use WSL, > Microsoft's Linux-on-Windows solution, as you could have both the Windows > and Linux builds of a given Python version installed on the same machine. > > Sure, but Isn’t the WSL subsystem pretty isolated already? Would native > Windows and WSL users be running in the same dir? > > That being said, I’m pretty skeptical of the PEP — I understand the > motivation — I make a point of avoiding virtual environments in my intro > classes, but at some point folks will need to learn them. > > I’ve had students think that virtualenv was a part of (or required by) > e.g. flask, because the tutorials include it in the setup. > > But I think environments really need to be more distinct, not less, I’m > quite concerned about mingling them in one place. > > Maybe I’m reading it wrong, but it seems that this could create serious > clashes with other “environment” systems, such as conda. > > I suppose one could say: “don’t do that” — I.e. don’t create a > __pypackages__ dir if you are going to use conda — but many folks want the > same source to be runnable in multiple “styles” of Python. > > Also, I see a major benefit for teaching, but it does go a bit against my > philosophy of not hiding important details from newbies — that is, don’t > teach using an approach that is not suitable for production. > > And newbies could be really confused by the fact that pip installs stuff > differently depending on what dir they are in and what is in that dir. > > The PEP is listed as a draft — anyone know what’s going on with it? > > -CHB > > -- Christopher Barker, Ph.D. Oceanographer Emergency Response Division NOAA/NOS/OR&R (206) 526-6959 voice 7600 Sand Point Way NE (206) 526-6329 fax Seattle, WA 98115 (206) 526-6317 main reception chris.bar...@noaa.gov
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