Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: crypto-api (user goal)
rejecting: crypto-api-0.13.2, crypto-api-0.13, crypto-api-0.12.2.2,
crypto-api-0.12.2.1, crypto-api-0.12.2, crypto-api-0.12.1, crypto-api-0.12,
crypto-api-0.11, crypto-api-0.10.2, crypto-api-0.10.1, crypto-api-0.10,
crypto-api-0.9, crypto-api-0.8, crypto-api-0.7, crypto-api-0.6.4,
crypto-api-0.6.3, crypto-api-0.6.2.1, crypto-api-0.6.2, crypto-api-0.6.1
(constraint from user target requires ==0.6)
trying: crypto-api-0.6
next goal: base (dependency of crypto-api-0.6)
rejecting: base-4.9.0.0/installed-4.9... (conflict: crypto-api => base==4.* &&
<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.