Many thanks to Pepperfish and Rob for hosting
lua-users.org for such a long stretch.
About site requirements, it needs at least Linux shared hosting (preferably Debian or Ubuntu). Storage need is about 10GB currently, and compute need is small-to-negligible.
Assuming
lua.org doesn't find a solution suitable for lua-users to ride on, we're looking separately for a free hosting commitment for at least 7 years out. If you think you may be able to host the site, please email me directly.
I don't have any interest in updating the aged yet reliable software stack. If there is a person or group passionate about refreshing the site, you'd need to be willing to take ownership of the entirety (not just wiki or list archive), and agree to preserve URL's of list messages and searches, wiki pages, hosted files, etc. Not for the faint of heart-- email me directly.
--John