Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: aeson-pretty (user goal)
rejecting: aeson-pretty-0.7.2, 0.7.1, 0.7, 0.6.3, 0.6.2, 0.6.1, 0.6, 0.5.2,
0.5.1, 0.5.0, 0.4.0, 0.3.1 (global constraint requires ==0.3)
trying: aeson-pretty-0.3
trying: text-1.2.1.3 (dependency of aeson-pretty-0.3)
next goal: bytestring (dependency of aeson-pretty-0.3)
rejecting: bytestring-0.10.6.0/installed-236..., 0.10.6.0, 0.10.4.1, 0.10.4.0,
0.10.2.0, 0.10.0.2, 0.10.0.1, 0.10.0.0 (conflict: aeson-pretty =>
bytestring==0.9.*)
rejecting: bytestring-0.9.2.1, 0.9.2.0, 0.9.1.10, 0.9.1.9, 0.9.1.8, 0.9.1.7,
0.9.1.6, 0.9.1.5, 0.9.1.4, 0.9.1.3, 0.9.1.2, 0.9.1.1, 0.9.1.0, 0.9.0.4,
0.9.0.3, 0.9.0.2, 0.9.0.1, 0.9 (conflict: text => bytestring>=0.10.4.0)
Dependency tree exhaustively searched.