Resolving dependencies... cabal: Could not resolve dependencies: next goal: pipes-text (user goal) rejecting: pipes-text-0.0.2.5, pipes-text-0.0.2.4, pipes-text-0.0.2.3, pipes-text-0.0.2.2, pipes-text-0.0.2.1, pipes-text-0.0.2.0, pipes-text-0.0.1.0, pipes-text-0.0.0.17, pipes-text-0.0.0.16, pipes-text-0.0.0.15, pipes-text-0.0.0.14, pipes-text-0.0.0.13, pipes-text-0.0.0.12, pipes-text-0.0.0.11, pipes-text-0.0.0.10, pipes-text-0.0.0.9, pipes-text-0.0.0.8, pipes-text-0.0.0.7, pipes-text-0.0.0.6, pipes-text-0.0.0.5, pipes-text-0.0.0.4 (constraint from user target requires ==0.0.0.3) trying: pipes-text-0.0.0.3 trying: base-4.9.0.0/installed-4.9... (dependency of pipes-text-0.0.0.3) next goal: transformers (dependency of pipes-text-0.0.0.3) rejecting: transformers-0.5.2.0/installed-0.5..., transformers-0.5.2.0, transformers-0.5.1.0, transformers-0.5.0.1, transformers-0.5.0.0, transformers-0.4.3.0, transformers-0.4.2.0, transformers-0.4.1.0 (conflict: pipes-text => transformers>=0.2.0.0 && <0.4) rejecting: transformers-0.3.0.0, transformers-0.2.2.1 (conflict: base==4.9.0.0/installed-4.9..., transformers => base>=2 && <4.8 || >=1.0 && <2) rejecting: transformers-0.2.1.0, transformers-0.2.0.0 (conflict: base==4.9.0.0/installed-4.9..., transformers => base>=2 && <4.3 || >=1.0 && <2) rejecting: transformers-0.1.4.0, transformers-0.1.3.0, transformers-0.1.1.0, transformers-0.1.0.1, transformers-0.0.1.0, transformers-0.0.0.0, transformers-0.5.0.2, transformers-0.4.0.0 (conflict: pipes-text => transformers>=0.2.0.0 && <0.4) rejecting: transformers-0.2.2.0 (conflict: base==4.9.0.0/installed-4.9..., transformers => base>=2 && <4.6 || >=1.0 && <2) rejecting: transformers-0.1.0.0 (conflict: pipes-text => transformers>=0.2.0.0 && <0.4) Dependency tree exhaustively searched.