add sympy as docbuild dependency

[dimpase]

if sympy is not yet built, the docbuilding might fail.
Reported here.

CC: @kiwifb

Component: build

Author: Dima Pasechnik

Branch/Commit: 0c2bbd3

Reviewer: François Bissey

Issue created by migration from https://trac.sagemath.org/ticket/24238

[dimpase]

Branch: u/dimpase/docbuildsympydep

[dimpase]

Commit: 0c2bbd3

[dimpase]

Author: Dima Pasechnik

[kiwifb]

comment:2

Looks good to me. It explains a few messages around the mailing list and is an appropriate fix.

[kiwifb]

Reviewer: François Bissey

[jdemeyer]

comment:3

I think the fact that the documentation depends on a sympy is a recent regression. I think it might be solved by #24067 which would be a better solution. I'm setting this to sage-pending to check that.

[jdemeyer]

comment:4

In fact, #24067 does fix this ticket in a better way, so I suggest to close this one.

[dimpase]

comment:5

Replying to @jdemeyer:

In fact, #24067 does fix this ticket in a better way, so I suggest to close this one.

I do not get how #24067 would solve the issue on this ticket. sympy is a dependence of docbuilding.

[jdemeyer]

comment:7

Replying to @dimpase:

sympy is a dependence of docbuilding.

Yes, and that's the bug that #24067 fixes. It shouldn't be a dependency.

Anyway, given that #24067 is stalled, we should merge this anyway. And since it breaks building Sage, it should even be a blocker.

[vbraun]

Changed branch from u/dimpase/docbuildsympydep to 0c2bbd3