Use mathjax instead of no-longer-existing pngmath

Either imgmath or mathjax fixes the FTBFS;
mathjax also makes TeX display as equations, i.e. fixes #687301

Author: Rebecca N. Palmer <rebecca_palmer@zoho.com>
Forwarded: not-needed (mathjax is already the upstream default)

Gbp-Pq: Name no-sphinx-pngmath.patch

diff --git a/docs/source/conf.py b/docs/source/conf.py
index 13a4da567669f93af5d8ce8001dfb9be77517969..92c742c0373b1cc6241790972ed2e24e8f2aa6d1 100644 (file)
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -30,8 +30,7 @@ extensions = ['sphinx.ext.autodoc',
               'sphinx.ext.intersphinx',
               'sphinx.ext.todo',
               # 'sphinx.ext.mathjax', # One of mathjax, pngmath or imgmath
-              # 'sphinx.ext.imgmath'
-              'sphinx.ext.pngmath',
+              'sphinx.ext.mathjax',
               'sphinx.ext.viewcode',
               'sphinx.ext.autosummary',
               'sphinx.ext.inheritance_diagram',