Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: orchid (user goal)
rejecting: orchid-0.0.8, 0.0.7 (global constraint requires ==0.0.6)
trying: orchid-0.0.6
trying: base-4.7.0.1/installed-e4b... (dependency of orchid-0.0.6)
next goal: mtl (dependency of orchid-0.0.6)
rejecting: mtl-2.2.1, 2.2.0.1, 2.2, 2.1.3.1, 2.1.2, 2.1.1, 2.1, 2.0.1.1,
2.0.1.0, 2.0.0.0, 1.1.1.1, 1.1.1.0 (conflict: orchid => mtl==1.1.0.2)
rejecting: mtl-1.1.0.2 (conflict: base==4.7.0.1/installed-e4b..., mtl =>
base<4.3)
rejecting: mtl-1.1.0.1, 1.1.0.0, 1.0 (conflict: orchid => mtl==1.1.0.2)
Dependency tree exhaustively searched.