I also LOVE Go, but recently rewrote a small tool to Lisette [1]. Its was the most fun i had in a long time while programming.

I can Highly recommend it, specially because you have Haskell experience (you get all the usual suspects, like ADTs, exhaustive pattern matching etc) in Lisette code. It has a fast compiler too, and produces human readable Go code. It also comes with great tooling out of the box (formatter/lsp etc).

1. http://lisette.run