MarsSeed  filed a request to merge labrador  into labrador-git :
There are no longer any stable release tags since 2017.
'labrador' package has been orphaned but its last maintainer mentioned in comment in January 2021 that they have created the AUR/labrador-git package because the git master gets continuous updates without release tags, and therefore the VCS package is the only working and up-to-date version of this application.
'labrador' package doesn't work anymore also, since it points to GitHub continuously updated .tar.gz but hardcodes a checksum so the source verification fails.
Previous maintainer meant to merge this to labrador-git but seems they have forgotten to do so.
'labrador-git' needs a tiny fix at the moment but otherwise it is well-maintained.
Request #34607 has been Accepted by grawlinson :
[Autogenerated] Accepted merge for labrador into labrador-git.