Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: Hermes (user goal)
rejecting: Hermes-0.0.4, 0.0.3, 0.0.2 (global constraint requires ==0.0.1)
trying: Hermes-0.0.1
trying: base-4.8.1.0/installed-4f7... (dependency of Hermes-0.0.1)
next goal: syb (dependency of Hermes-0.0.1)
rejecting: syb-0.6, 0.5.1, 0.5, 0.4.4, 0.4.3, 0.4.2, 0.4.1, 0.4.0, 0.3.7,
0.3.6.2, 0.3.6.1, 0.3.6, 0.3.5, 0.3.4, 0.3.3, 0.3.2, 0.3.1, 0.3, 0.2.2, 0.2.1,
0.2 (conflict: Hermes => syb==0.1.*)
rejecting: syb-0.1.0.3 (conflict: base==4.8.1.0/installed-4f7..., syb =>
base>=4.0 && <4.3)
rejecting: syb-0.1.0.2 (conflict: base==4.8.1.0/installed-4f7..., syb =>
base>=4.1 && <4.3)
rejecting: syb-0.1.0.1 (conflict: base==4.8.1.0/installed-4f7..., syb =>
base<4.4)
rejecting: syb-0.1.0.0 (conflict: base==4.8.1.0/installed-4f7..., syb =>
base>=4.0 && <4.4)
Dependency tree exhaustively searched.