Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: json-autotype (user goal)
rejecting: json-autotype-1.0.10, 1.0.7, 1.0.6, 1.0.5, 1.0.4, 1.0.3, 1.0.2,
1.0.1, 1.0, 0.5, 0.4, 0.3, 0.2.5.13, 0.2.5.12, 0.2.5.11, 0.2.5.10, 0.2.5.9,
0.2.5.8, 0.2.5.7, 0.2.5.6, 0.2.5.4, 0.2.5.3, 0.2.5.2, 0.2.5.1, 0.2.5.0,
0.2.4.0 (global constraint requires ==0.2.3.0)
trying: json-autotype-0.2.3.0
next goal: base (dependency of json-autotype-0.2.3.0)
rejecting: base-4.8.1.0/installed-4f7... (conflict: json-autotype => base>=4.3
&& <4.8)
rejecting: base-4.8.1.0, 4.8.0.0, 4.7.0.2, 4.7.0.1, 4.7.0.0, 4.6.0.1, 4.6.0.0,
4.5.1.0, 4.5.0.0, 4.4.1.0, 4.4.0.0, 4.3.1.0, 4.3.0.0, 4.2.0.2, 4.2.0.1,
4.2.0.0, 4.1.0.0, 4.0.0.0, 3.0.3.2, 3.0.3.1 (global constraint requires
installed instance)
Dependency tree exhaustively searched.