Heinrich Schuchardt c0b6f7d4b8 doc: add graphviz imagemagick as build dependencies
'make htmldocs' requires graphviz and imagemagick (at least with Sphinx
3.5.4).

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
2021-08-01 23:31:07 +02:00
..
2021-02-28 13:57:30 -05:00