https://lists.sr.ht/~technomancy/fennel/%3C87v90ubdrq.fsf%40hagelb.org%3E
"And 1.0.0 will have its binary downloads compiled with Lua 5.4 instead of 5.3 which has been used so far." -- https://lists.sr.ht/~technomancy/fennel/%3C875yvdvc7z.fsf%40hagelb.org%3E