Improve handling of style variable in template. #217
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The
style
variable is missing in Sphinx 7. Instead, it now uses a list ofstyles
[1]. This new list was already added in Sphinx 5.1. It looks like thestyle
was only removed in Sphinx 7, though.This commit updates the
layout.html
template to define the styles variable if it is missing. This makes the change compatible with both Sphinx <5.1 and versions later than that.This change is enough to make our documentation buildable with Sphinx 7 when using this theme.
[1] https://www.sphinx-doc.org/en/master/development/templating.html#styles