Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: riak (user goal)
rejecting: riak-1.1.1.0, riak-1.1.0.0, riak-1.0.1.1, riak-1.0.1.0,
riak-1.0.0.1, riak-1.0.0.0, riak-0.9.1.1, riak-0.9.1.0, riak-0.9.0.0,
riak-0.8.0.0, riak-0.7.2.1, riak-0.7.2.0, riak-0.7.0.3, riak-0.7.0.2,
riak-0.7.0.1, riak-0.6.0.1, riak-0.6.0.0, riak-0.5.0.0, riak-0.4.1.1
(constraint from user target requires ==0.4.1.0)
trying: riak-0.4.1.0
trying: base-4.9.0.0/installed-4.9... (dependency of riak-0.4.1.0)
trying: transformers-0.5.2.0/installed-0.5... (dependency of mtl-2.2.1)
next goal: pool (dependency of riak-0.4.1.0)
rejecting: pool-0.1.2.1, pool-0.1.2 (conflict: base==4.9.0.0/installed-4.9...,
pool => base>=4 && <4.7)
rejecting: pool-0.1.1, pool-0.1.0.4, pool-0.1.0.3, pool-0.1.0.2 (conflict:
transformers==0.5.2.0/installed-0.5..., pool => transformers>=0.2.1 && <0.3)
rejecting: pool-0.1.0.1, pool-0.1.0, pool-0.0.1.1, pool-0.0.1, pool-0.0.0
(conflict: riak => pool>=0.1.0.2)
Backjump limit reached (currently 2000, change with --max-backjumps or try to
run with --reorder-goals).