Resolving dependencies... cabal: Could not resolve dependencies: next goal: monadiccp (user goal) rejecting: monadiccp-0.7.6, 0.7.5, 0.7.4, 0.7.3, 0.7.2, 0.7.1 (global constraint requires ==0.7.0) trying: monadiccp-0.7.0 trying: base-4.8.1.0/installed-4f7... (dependency of monadiccp-0.7.0) trying: pretty-1.1.2.0/installed-293... (dependency of monadiccp-0.7.0) trying: deepseq-1.4.1.1/installed-8fb... (dependency of pretty-1.1.2.0/installed-293...) next goal: haskell98 (dependency of monadiccp-0.7.0) rejecting: haskell98-2.0.0.3 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base>=4.7 && <4.8) rejecting: haskell98-2.0.0.2 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base==4.6.*) rejecting: haskell98-2.0.0.1 (conflict: deepseq => array==0.5.1.0/installed-d42..., haskell98 => array>=0.3 && <0.5) rejecting: haskell98-2.0.0.0 (conflict: deepseq => array==0.5.1.0/installed-d42..., haskell98 => array>=0.3 && <0.4) rejecting: haskell98-1.1.0.1, 1.1.0.0, 1.0.1.1 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base>=3 && <4.6) rejecting: haskell98-1.0.1.0 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base<4.6) rejecting: haskell98-1.0 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base<4.3) Dependency tree exhaustively searched.