Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: henet (user goal)
rejecting: henet-1.3.9.3, 1.3.9.2, 1.3.9.1 (global constraint requires
==1.3.9.0)
trying: henet-1.3.9.0
trying: base-4.8.1.0/installed-4f7... (dependency of henet-1.3.9.0)
next goal: bitset (dependency of henet-1.3.9.0)
rejecting: bitset-1.4.8 (conflict: base==4.8.1.0/installed-4f7..., bitset =>
base>=4.4.0 && <4.8)
rejecting: bitset-1.4.7 (conflict: base==4.8.1.0/installed-4f7..., bitset =>
base>=4.4.0 && <4.7)
rejecting: bitset-1.4.6, 1.4.5, 1.4.4, 1.4.3, 1.4.2, 1.4.1, 1.4.0, 1.3.0, 1.2,
1.1, 1.0, 0.6, 0.5 (conflict: henet => bitset>=1.4.7)
Dependency tree exhaustively searched.