Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: property-list (user goal)
rejecting: property-list-0.1.0.5, property-list-0.1.0.4,
property-list-0.1.0.3, property-list-0.1.0.2, property-list-0.1.0.1,
property-list-0.1, property-list-0.0.3, property-list-0.0.1.0,
property-list-0.0.0.7 (constraint from user target requires ==0.0.0.6)
trying: property-list-0.0.0.6
trying: base-4.9.0.0/installed-4.9... (dependency of property-list-0.0.0.6)
next goal: bytestring-class (dependency of property-list-0.0.0.6)
rejecting: bytestring-class-0.0.0.1, bytestring-class-0.0.0 (conflict:
base==4.9.0.0/installed-4.9..., bytestring-class => base<4.4)
Dependency tree exhaustively searched.