Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: mealy (user goal)
[__0] rejecting: mealy-0.5.1.0 (conflict: requires unknown language GHC2024;
did you mean GHC2021?)
[__0] rejecting: mealy-0.5.0.1, mealy-0.5.0.0, mealy-0.4.5.0, mealy-0.4.4.1,
mealy-0.4.4, mealy-0.4.3, mealy-0.4.2, mealy-0.4.1, mealy-0.4.0, mealy-0.3.0,
mealy-0.2.0, mealy-0.1.0, mealy-0.0.3, mealy-0.0.2, mealy-0.0.1 (constraint
from user target requires ==0.5.1.0)
[__0] fail (backjumping, conflict set: mealy)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: mealy