Resolving dependencies... cabal: Could not resolve dependencies: next goal: leaky (user goal) rejecting: leaky-0.4.0.0, 0.3.0.3, 0.3.0.2, 0.3.0.1, 0.3.0.0, 0.2.1.1, 0.2.1.0, 0.2.0.1 (global constraint requires ==0.2.0.0) trying: leaky-0.2.0.0 next goal: seqaid (dependency of leaky-0.2.0.0) rejecting: seqaid-0.4.0.0, 0.3.0.1, 0.3.0.0, 0.2.1.1, 0.2.1.0 (conflict: leaky => seqaid==0.2.0.0) trying: seqaid-0.2.0.0 trying: mtl-2.2.1 (dependency of seqaid-0.2.0.0) next goal: deepseq-bounded (dependency of leaky-0.2.0.0) rejecting: deepseq-bounded-0.8.0.0, 0.7.0.2, 0.7.0.1, 0.7.0.0 (conflict: leaky => deepseq-bounded==0.6.*) rejecting: deepseq-bounded-0.6.2.0, 0.6.1.0, 0.6.0.3, 0.6.0.2, 0.6.0.1, 0.6.0.0 (conflict: mtl==2.2.1, deepseq-bounded => mtl==2.1.*) rejecting: deepseq-bounded-0.5.5, 0.5.4, 0.5.3, 0.5.2, 0.5.1, 0.5.0 (conflict: leaky => deepseq-bounded==0.6.*) Dependency tree exhaustively searched.