Since https://gitlab.archlinux.org/archlinux/packaging/packages/curl/-/commit/b60348c6 , curl in official packages support http3.
I guess there is no need for this package anymore, if it's OK I'll open a deletion request a week later.
Edit: Just saw https://aur.archlinux.org/packages/curl-http3#comment-955355 , nevermind.
Pinned Comments
T4cC0re commented on 2020-04-30 10:45 (UTC)
curl 7.70.0!
After curl 7.69.* was hard to build with quiche, curl 7.70.0 works again :)
To connect to a host via http3, just use the
--http3
flag