Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: trifecta (user goal)
rejecting: trifecta-1.5.2, 1.5.1.3, 1.5.1.2, 1.5.1.1, 1.5.1, 1.5, 1.4.3,
1.4.2, 1.4.1, 1.4, 1.2.1.1, 1.2.1, 1.2, 1.1, 1.0, 0.53, 0.52, 0.51.0.1, 0.51,
0.50.2.1, 0.50.1, 0.50, 0.49.1 (global constraint requires ==0.49)
trying: trifecta-0.49
trying: base-4.8.1.0/installed-4f7... (dependency of trifecta-0.49)
next goal: terminfo (dependency of trifecta-0.49)
rejecting: terminfo-0.4.0.1/installed-c72..., 0.4.0.1, 0.4.0.0 (conflict:
trifecta => terminfo>=0.3.2 && <0.4)
rejecting: terminfo-0.3.2.6, 0.3.2.5, 0.3.2.4 (conflict:
base==4.8.1.0/installed-4f7..., terminfo => base>=4.0 && <4.8)
rejecting: terminfo-0.3.2.3, 0.3.2.2, 0.3.2.1, 0.3.2 (conflict:
base==4.8.1.0/installed-4f7..., terminfo => base>=1.0 && <4.8)
rejecting: terminfo-0.3.1.3, 0.3.1.2, 0.3.1.1, 0.3.1, 0.3.0.2, 0.3.0.1, 0.3,
0.2.2.1, 0.2.2, 0.2.1, 0.2, 0.1 (conflict: trifecta => terminfo>=0.3.2 &&
<0.4)
Dependency tree exhaustively searched.