Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: GroteTrap (user goal)
rejecting: GroteTrap-0.5.1, 0.5 (global constraint requires ==0.4)
trying: GroteTrap-0.4
trying: base-4.8.1.0/installed-4f7... (dependency of GroteTrap-0.4)
next goal: parsec (dependency of GroteTrap-0.4)
rejecting: parsec-3.1.9, 3.1.8, 3.1.7, 3.1.6, 3.1.5, 3.1.4, 3.1.3, 3.1.2,
3.1.1, 3.1.0, 3.0.1, 3.0.0, 2.1.0.1 (conflict: GroteTrap => parsec<=2.1.0.0)
rejecting: parsec-2.1.0.0, 2.0 (conflict: base==4.8.1.0/installed-4f7...,
parsec => base<4.8)
Dependency tree exhaustively searched.