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: warp-3.0.13.1 (dependency of sssp-1.1.0)
trying: streaming-commons-0.1.12.1 (dependency of warp-3.0.13.1)
trying: transformers-0.3.0.0/installed-16a... (dependency of
streaming-commons-0.1.12.1)
trying: wai-extra-3.0.7.1 (dependency of sssp-1.1.0)
trying: lifted-base-0.2.3.6 (dependency of wai-extra-3.0.7.1)
trying: monad-control-1.0.0.4 (dependency of lifted-base-0.2.3.6)
trying: transformers-compat-0.4.0.4 (dependency of monad-control-1.0.0.4)
trying: transformers-compat-0.4.0.4:-two
rejecting: transformers-compat-0.4.0.4:-three (conflict:
transformers==0.3.0.0/installed-16a..., transformers-compat-0.4.0.4:three =>
transformers>=0.4.1 && <0.5)
rejecting: transformers-compat-0.4.0.4:+three (manual flag can only be changed
explicitly)
Backjump limit reached (change with --max-backjumps).