APL + Lisp = O_o
https://github.com/phantomics/april/ and yes it is used in production©!
> What pushed the development of April really is that April is used by a hardware startup called Bloxl (of which I am the CTO). There are other users but Bloxl is the flagship application.
https://www.arraycast.com/episodes/episode23-andrew-sengul
Bloxl in use: https://user-images.githubusercontent.com/3721004/159686845-... See also the ELS conference 2022.