I chose “setupcfg” as prefix instead of “packaging-setupcfg” because the scope
of the spec is not limited to packaging: it’s intended as a language-agnostic
document for packaging tools developers as well as Python authors.
I tried shortening the sidebar ToC with the tocdepth option instead, but it has
a bug which caused all headings with a level deeper than the tocdepth value to
all have the same section number, which was a usability regression rather than
in improvement.
Éric Araujo