Nicolas Goaziou via Bug reports for GNU Guix <bug-guix@gnu.org> writes:
> I pushed a tentative patch in "tex-team" branch. I’m in the process of > testing it but it could take a while as texlive-collection-latexextra > contains more than 1k packages. It seems to be better. The "extreme" example in your original post takes around 6.5 seconds on my machine (that’s still 2.5 times more than your results but my laptop is old) on the second run. The first run takes slightly longer because it needs to populate font cache. I’m going to ask for an inclusion on master branch, but it will not happen quickly considering the pending queue for merge requests.