On Sat, Sep 10, 2016 at 3:30 AM, Volker Braun <vbraun.n...@gmail.com> wrote:
> I think this idea of installing stuff globally (either system-wide or in
> ~/.local) is outdated. Really its always better to make a venv if you need
> some sort of specialist package. Its just an all-around better workflow. And
> Sage-the-distribution really is like a big venv.
>
> I'd rather spend 5 seconds installing my favorite package into Sage than an
> hour debugging what in ~/.local makes Sage crash.
>
> And there are a lot of potential conflicts; for startes if you compile Sage
> with SAGE_DEBUG=yes then the Python ABI will be incompatible with any
> extension modules in ~/.local
>
> If anything I would document that you can opt-in to the account-wide
> packages by running "PYTHONUSERBASE=~/.local sage"

Python itself could make those same arguments, as one can install
multiple copies of Python in different ways on a single computer.

I wish more people were interested in integrating Sage with the wider
Python ecosystem and community...

William

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> On Friday, September 9, 2016 at 5:38:58 PM UTC+2, William wrote:
>>
>> Hi,
>>
>> I personally disagree with trying to make Sage's python and the
>> general environment be as isolated as possibly from each other. We
>> should try to interoperate with the greater Python world as much as
>> possible, not change things to discourage that. If you want total
>> isolation, use Docker, don't mess with environment variables like
>> this...
>>
>> I realize that this might just get closed due to philosophical
>> differences. How about just document PYTHONUSERBASE in our FAQ or
>> something (like it is in python) and trust users to have a clue?
>>
>> I've made https://trac.sagemath.org/ticket/21456 about this.  However,
>> the authors of the new code in Sage that sets PYTHONUSERBASE if it
>> isn't set, might have a very different opinion, and for a good reason.
>> Thoughts?
>>
>>  -- William
>>
>>
>> --
>> William (http://wstein.org)
>
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-- 
William (http://wstein.org)

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