Resolving dependencies...
Error: cabal: Could not resolve dependencies:
[__0] next goal: xnobar (user goal)
[__0] rejecting: xnobar-1.0.0.0 (conflict: requires unknown language GHC2024;
did you mean GHC2021?)
[__0] rejecting: xnobar-0.0.0.2, xnobar-0.0.0.1, xnobar-0.0.0.0 (constraint
from user target requires ==1.0.0.0)
[__0] fail (backjumping, conflict set: xnobar)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: xnobar