Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: cipher-aes128 (user goal)
rejecting: cipher-aes128-0.7.0.3, cipher-aes128-0.7.0.2,
cipher-aes128-0.7.0.1, cipher-aes128-0.7, cipher-aes128-0.6.4,
cipher-aes128-0.6.3, cipher-aes128-0.6.2, cipher-aes128-0.6.1,
cipher-aes128-0.6, cipher-aes128-0.5, cipher-aes128-0.4.1, cipher-aes128-0.4,
cipher-aes128-0.3.2.1, cipher-aes128-0.3.2, cipher-aes128-0.3.1,
cipher-aes128-0.3, cipher-aes128-0.2.5, cipher-aes128-0.2.4,
cipher-aes128-0.2.3, cipher-aes128-0.2.2 (constraint from user target requires
==0.2.1)
trying: cipher-aes128-0.2.1
next goal: base (dependency of cipher-aes128-0.2.1)
rejecting: base-4.9.0.0/installed-4.9... (conflict: cipher-aes128 => base<0)
rejecting: base-4.9.0.0, base-4.8.2.0, base-4.8.1.0, base-4.8.0.0,
base-4.7.0.2, base-4.7.0.1, base-4.7.0.0, base-4.6.0.1, base-4.6.0.0,
base-4.5.1.0, base-4.5.0.0, base-4.4.1.0, base-4.4.0.0, base-4.3.1.0,
base-4.3.0.0, base-4.2.0.2, base-4.2.0.1, base-4.2.0.0, base-4.1.0.0,
base-4.0.0.0, base-3.0.3.2, base-3.0.3.1 (constraint from non-upgradeable
package requires installed instance)
Dependency tree exhaustively searched.