Hi Oscar,

I want to be able to answer a question: "which versions of SymPy should I 
try to support within my package that has SymPy as a dependency". It 
doesn't make a big difference whether this question is answered by SPEC 0 
or by SymPy itself, except for SPEC 0 being a central point of reference. I 
realized that SymPy has no support cycle, but I think the question is still 
useful regardless.

Anton
On Sunday 10 March 2024 at 15:48:13 UTC+1 Oscar wrote:

> Hi Anton,
>
> What difference does it make to you in practice whether or not SymPy
> is listed in SPEC 0?
>
> SymPy does not really support old versions with maintenance releases
> so it does not really have a "support cycle" in the sense that SPEC 0
> seems to describe. There can be a bugfix release shortly after a
> feature release to fix some obvious regressions but that is basically
> it.
>
> SymPy itself broadly tries to have wide version support for other
> packages like numpy just because without listing them as hard
> dependencies there is no way to indicate which versions sympy is
> compatible with. There is no way to put version constraints on
> optional dependencies in pip/PyPI land.
>
> Oscar
>
> On Sun, 10 Mar 2024 at 14:24, Anton Akhmerov <anton.a...@gmail.com> wrote:
> >
> > Hi all,
> >
> > There is now SPEC 0, a SciPy-community-wide standard for versions of 
> different packages that developers should aim supporting, see 
> https://scientific-python.org/specs/spec-0000/
> >
> > I believe Sympy is the biggest package missing from SPEC 0, and I've 
> asked the maintainers of SPEC 0 what is the best way to proceed (
> https://discuss.scientific-python.org/t/spec-0-include-sympy/975?u=akhmerov). 
> They appear to welcome the idea and recommended to reach out via this 
> mailing list.
> >
> > So here's the question I'd like to know (as someone authoring software 
> that depends on Sympy): would Sympy like to join SPEC 0?
> >
> > Thank you for your consideration,
> > Anton
> >
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