Since today (or yesterday) one of my packages [
paresse.sty] is giving an error.
I've tracked down the origin to
skeyval which says
~/texlive/2020/texmf-dist/tex/latex/skeyval/skeyval-core.tex:8460: Package skeyval Error: Patching '\end' failed! (skeyval) '\skvAtEndEnvironment' will not work
I've got the impression that
skeyval tries to do some almost legal moves there and that a recent change in the LaTeX2e kernel has put some hindrance in its expectations.
As far as I understand what I read, it seems to me that
firstaid.sty could come at the rescue for a quick fix (until I rewrite my style file without
skeyval), but I am at my wit's end there.
Any help for a quick fix will be highly appreciated.