Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: sssp (user goal)
rejecting: sssp-1.1.1 (global constraint requires ==1.1.0)
trying: sssp-1.1.0
trying: blaze-builder-0.4.0.1 (dependency of sssp-1.1.0)
next goal: aws (dependency of sssp-1.1.0)
rejecting: aws-0.12.1, 0.12, 0.11.4, 0.11.3, 0.11.2, 0.11.1, 0.11, 0.10.5,
0.10.4, 0.10.3, 0.10.2, 0.10.1, 0.10, 0.9.5, 0.9.4, 0.9.3, 0.9.2, 0.9.1, 0.9,
0.8.6, 0.8.5, 0.8.4, 0.8.3, 0.8.2, 0.8.1, 0.8.0 (conflict: sssp => aws>=0.7 &&
<0.8)
rejecting: aws-0.7.6.4, 0.7.6.3, 0.7.6.2, 0.7.6.1, 0.7.6, 0.7.5, 0.7.4, 0.7.3,
0.7.2, 0.7.1, 0.7.0 (conflict: blaze-builder==0.4.0.1, aws =>
blaze-builder>=0.2.1.4 && <0.4)
rejecting: aws-0.6.2, 0.6.1, 0.6.0, 0.5.0, 0.4.1, 0.4.0.1, 0.4.0, 0.3.2,
0.3.1, 0.3, 0.2, 0.1, 0.0.6, 0.0.5, 0.0.4, 0.0.3, 0.0.2, 0.0.1 (conflict: sssp
=> aws>=0.7 && <0.8)
Backjump limit reached (change with --max-backjumps).