Plan 9

I wonder if a Haskell compiler ported to the Plan 9 OS could build GHC for various architectures.

There are various Unmaintained Haskell implementations furthermore listed here.

9FRONT (webpage)

It wouldn't surprise me if this issue would be closed without an inquiry of the subject matter or Community response.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information