Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: attoparsec (user goal)
rejecting: attoparsec-0.13.0.1, 0.13.0.0, 0.12.1.6, 0.12.1.5, 0.12.1.4,
0.12.1.3, 0.12.1.2, 0.12.1.1, 0.12.1.0, 0.12.0.0, 0.11.3.4, 0.11.3.3,
0.11.3.2, 0.11.3.1, 0.11.3.0, 0.11.2.1, 0.11.1.0, 0.10.4.0, 0.10.3.0,
0.10.2.0, 0.10.1.1, 0.10.1.0, 0.10.0.3, 0.10.0.2, 0.10.0.1, 0.10.0.0, 0.9.1.2,
0.9.1.1, 0.9.0.0, 0.8.6.1, 0.8.6.0, 0.8.5.3, 0.8.5.2, 0.8.5.1, 0.8.5.0,
0.8.4.0, 0.8.3.0, 0.8.2.0, 0.8.1.1, 0.8.1.0, 0.8.0.2, 0.8.0.1, 0.8.0.0, 0.7.2,
0.7.1 (global constraint requires ==0.6)
trying: attoparsec-0.6
trying: base-4.8.1.0/installed-4f7... (dependency of attoparsec-0.6)
rejecting: attoparsec-0.6:+applicative-in-base (conflict:
base==4.8.1.0/installed-4f7..., attoparsec-0.6:applicative-in-base =>
base>=2.0 && <4.2)
rejecting: attoparsec-0.6:-applicative-in-base (conflict:
base==4.8.1.0/installed-4f7..., attoparsec-0.6:applicative-in-base =>
base<2.0)
Dependency tree exhaustively searched.