The package changed with the addition of its libepoll-shim dependency.
Otherwise, we can get:
ERROR: libepoll-shim>=0.0.20210418 is not installed; can't buildlink files.
OpenJK is an effort by the JACoders group to maintain and improve the game
engine on which the Star Wars: Jedi Academy game runs on, while maintaining
full backwards compatibility with the existing game. This project does not
attempt to rebalance or otherwise modify core gameplay.
You will need a copy of Jedi Academy to play OpenJK.