Support both 8.6.5 and 8.10.1 versions of GHC.
Support both 8.6.5 and 8.10.1 versions of GHC.

ucsd-progsys/liquidhaskell,ucsd-progsys/liquidhaskell,ucsd-progsys/liquidhaskell,ucsd-progsys/liquidhaskell,ucsd-progsys/liquidhaskell,ucsd-progsys/liquidhaskell