New explcheck tools fails on macOS/cygwin (Linux?)

[Joseph Wright]

Hello all,

Trying the new explcheck tool works from Windows but on macOS and cygwin
(and likely Linux) fails:

(base) joseph at palladium siunitx % explcheck
/Library/TeX/texbin/explcheck:3: module 'explcheck-cli' not found:
	no field package.preload['explcheck-cli']
	no file '/usr/local/share/lua/5.3/explcheck-cli.lua'
	no file '/usr/local/share/lua/5.3/explcheck-cli/init.lua'
	no file '/usr/local/lib/lua/5.3/explcheck-cli.lua'
	no file '/usr/local/lib/lua/5.3/explcheck-cli/init.lua'
	no file './explcheck-cli.lua'
	no file './explcheck-cli/init.lua'
	no file '/usr/local/lib/lua/5.3/explcheck-cli.so'
	no file '/usr/local/lib/lua/5.3/loadall.so'
	no file './explcheck-cli.so'

probably as its assuming Lua not LuaTeX ...

Joseph