Increase minimum Pygments to 2.8

setup.py

@@ -19,7 +19,7 @@
     'sphinxcontrib-serializinghtml>=1.1.5',
     'sphinxcontrib-qthelp',
     'Jinja2>=2.3',
-    'Pygments>=2.0',
+    'Pygments>=2.8.0',
     'docutils>=0.14,<0.19',
     'snowballstemmer>=1.1',
     'babel>=1.3',

sphinx/highlighting.py

@@ -4,8 +4,6 @@
 from importlib import import_module
 from typing import Any, Dict
 
-from packaging import version
-from pygments import __version__ as pygmentsversion
 from pygments import highlight
 from pygments.filters import ErrorToken
 from pygments.formatter import Formatter
@@ -44,20 +42,6 @@
 _LATEX_ADD_STYLES = r'''
 \renewcommand\PYGZsq{\textquotesingle}
 '''
-# fix extra space between lines when Pygments highlighting uses \fcolorbox
-# add a {..} to limit \fboxsep scope, and force \fcolorbox use correct value
-# cf pygments #1708 which makes this unneeded for Pygments > 2.7.4
-_LATEX_ADD_STYLES_FIXPYG = r'''
-\makeatletter
-% fix for Pygments <= 2.7.4
-\let\spx@original@fcolorbox\fcolorbox
-\def\spx@fixpyg@fcolorbox{\fboxsep-\fboxrule\spx@original@fcolorbox}
-\def\PYG#1#2{\PYG@reset\PYG@toks#1+\relax+%
-             {\let\fcolorbox\spx@fixpyg@fcolorbox\PYG@do{#2}}}
-\makeatother
-'''
-if version.parse(pygmentsversion).release <= (2, 7, 4):
-    _LATEX_ADD_STYLES += _LATEX_ADD_STYLES_FIXPYG
 
 
 class PygmentsBridge: