Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: box (user goal)
[__0] rejecting: box-0.9.4.0 (conflict: requires unknown language GHC2024; did
you mean GHC2021?)
[__0] rejecting: box-0.9.3.3, box-0.9.3.2, box-0.9.3.1, box-0.9.3.0,
box-0.9.2.1, box-0.9.2.0, box-0.9.1, box-0.9.0, box-0.8.1, box-0.8.0,
box-0.7.0, box-0.6.3, box-0.6.2, box-0.6.1, box-0.6.0, box-0.5.0, box-0.4.0,
box-0.3.0, box-0.2.0, box-0.1.0, box-0.0.1.5, box-0.0.1.4, box-0.0.1.2,
box-0.0.1.1 (constraint from user target requires ==0.9.4.0)
[__0] fail (backjumping, conflict set: box)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: box