I highly recommend https://github.com/sdiehl/write-you-a-haskell https://github.com/sdiehl/write-you-a-haskell as it is very developer friendly. It’s not comple

I highly recommend https://github.com/sdiehl/write-you-a-haskell https://github.com/sdiehl/write-you-a-haskell as it is very developer friendly. It’s not complete, but it really gets the gears turning and will set you up for writing your own Hendley-Milner style type checker.