Resolving dependencies... cabal: Could not resolve dependencies: next goal: yackage (user goal) rejecting: yackage-0.7.0.8, 0.7.0.7, 0.7.0.6, 0.7.0.5, 0.7.0.4, 0.7.0.3, 0.7.0.2, 0.7.0.1, 0.7.0, 0.6.0.5, 0.6.0.4, 0.6.0.3, 0.6.0.2, 0.6.0.1, 0.6.0, 0.5.0.1, 0.5.0, 0.4.0, 0.3.0, 0.2.1, 0.2.0 (global constraint requires ==0.1.0.1) trying: yackage-0.1.0.1 trying: yackage-0.1.0.1:+upload trying: bytestring-0.10.4.0/installed-9f4... (dependency of yackage-0.1.0.1:+upload) next goal: http-enumerator (dependency of yackage-0.1.0.1:+upload) rejecting: http-enumerator-0.7.3.3, 0.7.3.2, 0.7.3.1, 0.7.3, 0.7.2.5, 0.7.2.4, 0.7.2.3, 0.7.2.2, 0.7.2.1, 0.7.2, 0.7.1.8, 0.7.1.7, 0.7.1.6, 0.7.1.5, 0.7.1.4, 0.7.1.3, 0.7.1.2, 0.7.1.1, 0.7.1, 0.7.0, 0.6.7, 0.6.6, 0.6.5.6, 0.6.5.5, 0.6.5.4, 0.6.5.3, 0.6.5.2, 0.6.5.1, 0.6.5, 0.6.4.3, 0.6.4.2, 0.6.4.1, 0.6.4, 0.6.3, 0.6.2.1, 0.6.2, 0.6.0.2, 0.6.0.1, 0.6.0 (conflict: yackage-0.1.0.1:upload => http-enumerator>=0.5.1 && <0.6) rejecting: http-enumerator-0.5.1 (conflict: bytestring==0.10.4.0/installed-9f4..., http-enumerator => bytestring>=0.9.1.4 && <0.10) rejecting: http-enumerator-0.5.0, 0.4.1, 0.4.0.1, 0.4.0, 0.3.1, 0.3.0, 0.2.1.5, 0.2.1.4, 0.2.1.3, 0.2.1.2, 0.2.1.1, 0.2.1, 0.2.0.4, 0.2.0.3, 0.2.0.2, 0.2.0.1, 0.2.0, 0.1.1, 0.1.0, 0.0.1, 0.0.0 (conflict: yackage-0.1.0.1:upload => http-enumerator>=0.5.1 && <0.6) Backjump limit reached (change with --max-backjumps).