Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: wai-routes (user goal)
rejecting: wai-routes-0.9.8, wai-routes-0.9.7, wai-routes-0.9.6,
wai-routes-0.9.5, wai-routes-0.9.4, wai-routes-0.9.3, wai-routes-0.9.2,
wai-routes-0.9.1, wai-routes-0.9.0, wai-routes-0.8.1, wai-routes-0.8.0,
wai-routes-0.7.3, wai-routes-0.7.2, wai-routes-0.7.1, wai-routes-0.7.0,
wai-routes-0.6.2, wai-routes-0.6.1 (constraint from user target requires
==0.6.0)
trying: wai-routes-0.6.0
next goal: base (dependency of wai-routes-0.6.0)
rejecting: base-4.9.0.0/installed-4.9... (conflict: wai-routes => base>=4.7 &&
<4.9)
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.