Resolving dependencies... cabal: Could not resolve dependencies: next goal: gitit (user goal) rejecting: gitit-0.10.6.3, 0.10.6.2, 0.10.6.1, 0.10.6, 0.10.5.1, 0.10.5, 0.10.4, 0.10.3.1, 0.10.3, 0.10.2, 0.10.1.2, 0.10.1.1, 0.10.1, 0.10.0.2, 0.10.0.1, 0.10, 0.9.0.1, 0.9, 0.8.1, 0.8.0.1, 0.8, 0.7.3.12, 0.7.3.11, 0.7.3.10, 0.7.3.9, 0.7.3.8, 0.7.3.7, 0.7.3.6, 0.7.3.5, 0.7.3.4, 0.7.3.3, 0.7.3.2, 0.7.3.1, 0.7.3, 0.7.2.1, 0.7.2, 0.7.1, 0.7, 0.6.6, 0.6.5, 0.6.4, 0.6.3, 0.6.2, 0.6.1, 0.5.3, 0.5.2, 0.5.1, 0.5, 0.4.1.3, 0.4.1.2, 0.4.1, 0.3.4.2, 0.3.4.1, 0.3.4, 0.3.3, 0.3.2, 0.3.1, 0.3, 0.2.2.1, 0.2.2, 0.2.1 (global constraint requires ==0.2) trying: gitit-0.2 trying: Crypto-4.2.5.1 (dependency of gitit-0.2) trying: QuickCheck-2.8.1 (dependency of Crypto-4.2.5.1) trying: transformers-0.3.0.0/installed-16a... (dependency of QuickCheck-2.8.1) trying: cgi-3001.2.2.2 (dependency of gitit-0.2) trying: exceptions-0.8.0.2 (dependency of cgi-3001.2.2.2) trying: transformers-compat-0.4.0.4 (dependency of exceptions-0.8.0.2) 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).