Constraint Alex to be new enough to support the revised primops
@bgamari however the trickiness here is that ghc-head pre and post ghc!4492 (closed) is both 9.1.x
, so no version of alex can distinguish the two.
@bgamari however the trickiness here is that ghc-head pre and post ghc!4492 (closed) is both 9.1.x
, so no version of alex can distinguish the two.