Features and optional tags for sage modules provided by separate distributions #32614
Description
... so that we can start writing # optional - sage.symbolic and similar.
We use it in #32432 (sagemath-polyhedra) to skip doctests that depend on sage.graphs, sage.combinat, sage.rings.number_field etc.
CC: @kliem @jhpalmieri
Component: doctest framework
Author: Matthias Koeppe
Branch/Commit: 4558791
Reviewer: John Palmieri, Travis Scrimshaw
Issue created by migration from https://trac.sagemath.org/ticket/32614