Resolving dependencies... cabal: Could not resolve dependencies: next goal: dvi-processing (user goal) rejecting: dvi-processing-0.3.1, 0.3, 0.2 (global constraint requires ==0.1) trying: dvi-processing-0.1 trying: base-4.8.1.0/installed-4f7... (dependency of dvi-processing-0.1) next goal: bytestring (dependency of dvi-processing-0.1) rejecting: bytestring-0.10.6.0/installed-236..., 0.10.6.0, 0.10.4.1, 0.10.4.0, 0.10.2.0, 0.10.0.2, 0.10.0.1, 0.10.0.0, 0.9.2.1, 0.9.2.0 (conflict: dvi-processing => bytestring>=0.9.1.10 && <0.9.2) rejecting: bytestring-0.9.1.10 (conflict: base==4.8.1.0/installed-4f7..., bytestring => base<4.4) rejecting: bytestring-0.9.1.9, 0.9.1.8, 0.9.1.7, 0.9.1.6, 0.9.1.5, 0.9.1.4, 0.9.1.3, 0.9.1.2, 0.9.1.1, 0.9.1.0, 0.9.0.4, 0.9.0.3, 0.9.0.2, 0.9.0.1, 0.9 (conflict: dvi-processing => bytestring>=0.9.1.10 && <0.9.2) Dependency tree exhaustively searched.