This year, I'll mostly be learning myself some Scala.
I'm not competing for any completion prizes (esp. as the puzzles unlock at 5am for me!), but I am trying to solve all of them without cheating...
Nothing exciting, although I may have a common utility library as well as per-day folders.
aoc2021 I wrote solutions in Rust. Not used it in anger since... maybe I should have contributed to some Mozilla code or Linux drivers? Ah well.