Resolving dependencies... cabal: Could not resolve dependencies: next goal: haskdeep (user goal) rejecting: haskdeep-0.2.0.1 (constraint from user target requires ==0.2.0.0) trying: haskdeep-0.2.0.0 trying: base-4.9.0.0/installed-4.9... (dependency of haskdeep-0.2.0.0) trying: regex-tdfa-text-1.0.0.3 (dependency of haskdeep-0.2.0.0) next goal: regex-tdfa (dependency of haskdeep-0.2.0.0) rejecting: regex-tdfa-1.2.2, regex-tdfa-1.2.1, regex-tdfa-1.2.0 (conflict: haskdeep => regex-tdfa==1.1.*) rejecting: regex-tdfa-1.1.8, regex-tdfa-1.1.7, regex-tdfa-1.1.6, regex-tdfa-1.1.4, regex-tdfa-1.1.3, regex-tdfa-1.1.2, regex-tdfa-1.1.1 (conflict: base==4.9.0.0/installed-4.9..., regex-tdfa => base>=4.0 && <4.7 || <4.0) rejecting: regex-tdfa-1.1.0 (conflict: regex-tdfa-text => regex-tdfa>=1.1.1) rejecting: regex-tdfa-1.0.0, regex-tdfa-0.97.4, regex-tdfa-0.97.3, regex-tdfa-0.97.1, regex-tdfa-0.95.2, regex-tdfa-0.95.1, regex-tdfa-0.94, regex-tdfa-0.92 (conflict: haskdeep => regex-tdfa==1.1.*) Dependency tree exhaustively searched.