Name: Lua (5.3)
Homepage: https://www.lua.org/home.html
Open Source: Yes (MIT license)
Source: https://www.lua.org/ftp/lua-5.3.3.tar.gz
I could only find Lua 5.1.5 in the repository. Lua 5.3 is the most up-to-date version and it should be in the repository in my opinion.