Resolving dependencies... cabal: Could not resolve dependencies: trying: hCsound-0.4.2 (user goal) trying: base-4.8.1.0/installed-4f7... (dependency of hCsound-0.4.2) next goal: transformers (dependency of hCsound-0.4.2) rejecting: transformers-0.4.2.0/installed-21d..., 0.4.3.0, 0.4.2.0, 0.4.1.0 (conflict: hCsound => transformers>=0.2 && <0.4) trying: transformers-0.3.0.0 rejecting: transformers-0.3.0.0:+applicativeinbase (conflict: base==4.8.1.0/installed-4f7..., transformers-0.3.0.0:applicativeinbase => base>=2 && <4.8) rejecting: transformers-0.3.0.0:-applicativeinbase (conflict: base==4.8.1.0/installed-4f7..., transformers-0.3.0.0:applicativeinbase => base>=1.0 && <2) Dependency tree exhaustively searched.