Resolving dependencies...
cabal: Could not resolve dependencies:
trying: hspec-2.4.5 (user goal)
next goal: hspec-discover (dependency of hspec-2.4.5)
rejecting: hspec-discover-2.4.4, hspec-discover-2.4.3, hspec-discover-2.4.2,
hspec-discover-2.4.1, hspec-discover-2.4.0, hspec-discover-2.3.2,
hspec-discover-2.3.1, hspec-discover-2.3.0, hspec-discover-2.2.4,
hspec-discover-2.2.3, hspec-discover-2.2.2, hspec-discover-2.2.1,
hspec-discover-2.2.0, hspec-discover-2.1.10, hspec-discover-2.1.9,
hspec-discover-2.1.8, hspec-discover-2.1.7, hspec-discover-2.1.6,
hspec-discover-2.1.5, hspec-discover-2.1.4, hspec-discover-2.1.3,
hspec-discover-2.1.2, hspec-discover-2.1.1, hspec-discover-2.1.0,
hspec-discover-2.0.2, hspec-discover-2.0.1, hspec-discover-2.0.0,
hspec-discover-0.2.0, hspec-discover-0.1.0.1, hspec-discover-0.1.0,
hspec-discover-0.0.5, hspec-discover-0.0.4, hspec-discover-0.0.3,
hspec-discover-0.0.2, hspec-discover-0.0.1, hspec-discover-0.0.0 (conflict:
hspec => hspec-discover==2.4.5)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: hspec, hspec-discover