Resolving dependencies...
cabal: Could not resolve dependencies:
trying: penny-bin-0.22.0.0 (user goal)
trying: base-4.7.0.1/installed-e4b... (dependency of penny-bin-0.22.0.0)
next goal: pretty-show (dependency of penny-bin-0.22.0.0)
rejecting: pretty-show-1.6.8.2, 1.6.8.1, 1.6.8, 1.6.7, 1.6.6, 1.6.5, 1.6.3,
1.6.2, 1.6.1, 1.6 (conflict: penny-bin => pretty-show==1.5.*)
rejecting: pretty-show-1.5 (conflict: base==4.7.0.1/installed-e4b...,
pretty-show => base>=4.4 && <4.7)
rejecting: pretty-show-1.4.1, 1.3.2, 1.3.1, 1.3, 1.2, 1.1.1, 1.1, 1 (conflict:
penny-bin => pretty-show==1.5.*)
Dependency tree exhaustively searched.