Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: aeson-schema (user goal)
rejecting: aeson-schema-0.4.1.1, aeson-schema-0.4.1.0, aeson-schema-0.4.0.0,
aeson-schema-0.3.0.7, aeson-schema-0.3.0.6, aeson-schema-0.3.0.5,
aeson-schema-0.3.0.4, aeson-schema-0.3.0.3, aeson-schema-0.3.0.2,
aeson-schema-0.3.0.1, aeson-schema-0.3.0.0 (constraint from user target
requires ==0.2.0.1)
trying: aeson-schema-0.2.0.1
trying: base-4.9.0.0/installed-4.9... (dependency of aeson-schema-0.2.0.1)
next goal: QuickCheck (dependency of aeson-schema-0.2.0.1)
rejecting: QuickCheck-2.9.2, QuickCheck-2.9.1, QuickCheck-2.9,
QuickCheck-2.8.2, QuickCheck-2.8.1, QuickCheck-2.8, QuickCheck-2.7.6,
QuickCheck-2.7.5, QuickCheck-2.7.4, QuickCheck-2.7.3, QuickCheck-2.7.2,
QuickCheck-2.7.1, QuickCheck-2.7 (conflict: aeson-schema => QuickCheck>=2.4.2
&& <2.7)
rejecting: QuickCheck-2.6, QuickCheck-2.5.1.1, QuickCheck-2.5.1,
QuickCheck-2.5, QuickCheck-2.4.2 (conflict: base==4.9.0.0/installed-4.9...,
QuickCheck => base>=4 && <4.8 || >=3 && <4 || <3)
rejecting: QuickCheck-2.4.1.1, QuickCheck-2.4.1, QuickCheck-2.4.0.1,
QuickCheck-2.4, QuickCheck-2.3.0.2, QuickCheck-2.3.0.1, QuickCheck-2.3,
QuickCheck-2.2, QuickCheck-2.1.2, QuickCheck-2.1.1.1, QuickCheck-2.1.1,
QuickCheck-2.1.0.3, QuickCheck-2.1.0.2, QuickCheck-2.1.0.1, QuickCheck-2.1,
QuickCheck-1.2.0.1, QuickCheck-1.2.0.0, QuickCheck-1.1.0.0, QuickCheck-1.0
(conflict: aeson-schema => QuickCheck>=2.4.2 && <2.7)
Dependency tree exhaustively searched.