On Wed, Aug 23, 2023, at 00:03, Steffen Nurpmeso wrote: > GNU requires "free" software, whereas Lua only seems > to be free software (ISC like it seems, but Copyright law is > beyond my understanding) Lua use the license that everyone calls "MIT" but GNU being GNU calls "Expat" [1] :) It is GPL-compatible so there is no licence problem to use that service. [1] https://www.gnu.org/licenses/license-list.html#GPLCompatibleLicenses -- Pierre Chapuis