Our pre-sales engineers, devops people were familiar with Python. It's also a popular language outside our company, though I'm sure some of our customers use Lua (e.g. in nginx tool).
Lua being designed specifically for embedding makes it a good choice.
I wonder, though whether we might have ended up with similar fights maintaining LuaRocks dependencies in rpm/apt ecosystem on various platforms as soon as those customizations start pulling in dependencies like XML parsers, crypto, etc.
Do you have thoughts on that? (Note, we target linux, but sell proprietary closed source binaries only, except for the customizations)