Update sphinx to 3.1

[antonio-rojas]

This breaks doc build again, the 'modules' dict values are now namedtuples instead of tuples.

CC: @timokau @kiwifb @jhpalmieri

Component: documentation

Author: Antonio Rojas

Branch/Commit: c574f58

Reviewer: John Palmieri

Issue created by migration from https://trac.sagemath.org/ticket/30001

[antonio-rojas]

Branch: u/arojas/update_sphinx_to_3_1

[antonio-rojas]

Commit: 07d0dae

[antonio-rojas]

New commits:

c46c6e7	Update sphinx to 3.1.1
07d0dae	port 'modules' dict values from tuple to namedtuple

[antonio-rojas]

Author: Antonio Rojas

[kliem]

comment:3

I'm checking whether this will also fix #30008

https://github.com/kliem/sage/pull/17/checks.

[jhpalmieri]

comment:4

Compared to Sage 9.2.beta1 with Sphinx 3.0.4, the bulleted lists here look double-spaced. Do we need to modify some setting?

[jhpalmieri]

comment:5

Replying to @jhpalmieri:

Compared to Sage 9.2.beta1 with Sphinx 3.0.4, the bulleted lists here look double-spaced. Do we need to modify some setting?

It turns out that this is a Sphinx issue: sphinx-doc/sphinx#7838.

[jhpalmieri]

comment:6

And sphinx-doc/sphinx#7852 contains a good fix. Do we want to use vanilla Sphinx 3.1.1 for now, or wait until this is merged (perhaps in 3.1.2)?

[jhpalmieri]

comment:7

The vertical spacing problem supposedly has been fixed in Sphinx 3.1.2, which has now been released.

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

c574f58

Update sphinx to 3.1.2

[sagetrac-git]

Changed commit from 07d0dae to c574f58

[jhpalmieri]

Reviewer: *John Palmieri*

[jhpalmieri]

comment:9

Thank you for taking care of the upgrade to 3.1.2. The spacing is indeed fixed, and it builds and passes tests for me. Documentation looks good at a quick glance, although I didn't look at it super carefully.

[mkoeppe]

Changed reviewer from *John Palmieri* to John Palmieri

[vbraun]

Changed branch from u/arojas/update_sphinx_to_3_1 to c574f58