Hi Vanessa, in the same mould as 'Here documents' there's Hugs Extensible records /TRex https://www.haskell.org/hugs/pages/hugsman/exts.html#sect7.2 Not sure whether it counts as "retro": it still works, and is still superior to H2010 Datatype records (with GHC's extensions). AntC

I’m looking to appreciate “retro” Haskell projects, things from before stabilization/company use.

Such as:

Hugs string extensions https://www.haskell.org/hugs/pages/users_guide/here-documents.html https://www.haskell.org/hugs/pages/users_guide/here-documents.html