[0cf8612b2e1e]

Each new Lua version has breaking changes that are of dubious value to keep on the upgrade treadmill. Something like a Python2->3.

LuaJIT is famously on 5.1 with no signs of moving.

[bondant]

Not moving straight to a more recent version, but still cherry-picking some parts of them. You can see some functionalities from Lua 5.2 and 5.3 are working in Luajit: https://luajit.org/extensions.html

[90s_dev]

I guess all of this means Lua has "flavors" more than "versions".