Resolving dependencies... cabal: Could not resolve dependencies: trying: matsuri-0.0.4 (user goal) trying: MissingH-1.3.0.1 (dependency of matsuri-0.0.4) trying: parsec-3.1.9 (dependency of MissingH-1.3.0.1) next goal: XMPP (dependency of matsuri-0.0.4) rejecting: XMPP-0.1.2 (conflict: parsec==3.1.9, XMPP => parsec>=2.0 && <3) rejecting: XMPP-0.1.1, 0.1.0, 0.0.4, 0.0.3, 0.0.2 (conflict: matsuri => XMPP==0.1.2) Backjump limit reached (change with --max-backjumps).