Resolving dependencies...
cabal: Could not resolve dependencies:
trying: Hawk-0.0.2 (user goal)
trying: base-4.8.1.0/installed-4f7... (dependency of Hawk-0.0.2)
next goal: json-b (dependency of Hawk-0.0.2)
rejecting: json-b-0.0.4 (conflict: base==4.8.1.0/installed-4f7..., json-b =>
base>=2 && <4)
rejecting: json-b-0.0.3, 0.0.2, 0.0.1, 0.0.0 (conflict: Hawk => json-b>=0.0.4
&& <0.1)
Dependency tree exhaustively searched.