Quines in various languages

Requirements:

$ lua -v
Lua 5.4.6  Copyright (C) 1994-2023 Lua.org, PUC-Rio
$ ruby -v
ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-linux]
$ csi -version
Version 4.11.0 (rev ce980c4)
$ elixir --version
Elixir 1.3.3
$ deno -v
deno 2.5.3
$ ocaml -version
The OCaml toplevel, version 5.3.0
$ make
deno: ✔
elixir: ✔
lua: ✔
ocaml: ✔
ruby: ✔
scheme: ✔

I hereby release this code into the public domain.