Resolving dependencies...
cabal: Could not resolve dependencies:
trying: base-4.9.0.0/installed-4.9... (dependency of queuelike-1.0.2)
trying: stateful-mtl-1.0.7 (dependency of queuelike-1.0.2)
next goal: MaybeT (dependency of stateful-mtl-1.0.7)
rejecting: MaybeT-0.1.2, MaybeT-0.1.1 (conflict:
base==4.9.0.0/installed-4.9..., MaybeT => base<4.8)
rejecting: MaybeT-0.1.0 (conflict: base==4.9.0.0/installed-4.9..., MaybeT =>
base<4.3)
Dependency tree exhaustively searched.