Resolving dependencies... cabal: Could not resolve dependencies: next goal: leksah-server (user goal) rejecting: leksah-server-0.15.2.0, leksah-server-0.15.0.9, leksah-server-0.15.0.8, leksah-server-0.15.0.7, leksah-server-0.15.0.6, leksah-server-0.15.0.5, leksah-server-0.15.0.4, leksah-server-0.15.0.3, leksah-server-0.15.0.2, leksah-server-0.15.0.1, leksah-server-0.14.3.2, leksah-server-0.14.3.1, leksah-server-0.14.3.0, leksah-server-0.14.0.1, leksah-server-0.14.0.0, leksah-server-0.13.1.1, leksah-server-0.13.1.0, leksah-server-0.12.1.2, leksah-server-0.12.1.1, leksah-server-0.12.1.0, leksah-server-0.12.0.5, leksah-server-0.12.0.4, leksah-server-0.12.0.3, leksah-server-0.10.0.4, leksah-server-0.10.0.3, leksah-server-0.10.0, leksah-server-0.8.0.8, leksah-server-0.8.0.7, leksah-server-0.8.0.6, leksah-server-0.8.0.5, leksah-server-0.8.0.4, leksah-server-0.8.0.3 (constraint from user target requires ==0.8.0.2) trying: leksah-server-0.8.0.2 trying: base-4.9.0.0/installed-4.9... (dependency of leksah-server-0.8.0.2) next goal: haddock-leksah (dependency of leksah-server-0.8.0.2) rejecting: haddock-leksah-2.6.0 (conflict: base==4.9.0.0/installed-4.9..., haddock-leksah => base>=4.0.0.0 && <4.3.0.0) rejecting: haddock-leksah-2.5.0 (conflict: leksah-server => haddock-leksah==2.6.0) Dependency tree exhaustively searched.