Resolving dependencies... cabal: Could not resolve dependencies: next goal: wai-app-file-cgi (user goal) rejecting: wai-app-file-cgi-3.1.3, wai-app-file-cgi-3.1.2, wai-app-file-cgi-3.1.1, wai-app-file-cgi-3.1.0, wai-app-file-cgi-3.0.9, wai-app-file-cgi-3.0.8, wai-app-file-cgi-3.0.7, wai-app-file-cgi-3.0.6, wai-app-file-cgi-3.0.5, wai-app-file-cgi-3.0.4, wai-app-file-cgi-3.0.3, wai-app-file-cgi-3.0.2, wai-app-file-cgi-3.0.1, wai-app-file-cgi-3.0.0, wai-app-file-cgi-2.0.5, wai-app-file-cgi-2.0.4, wai-app-file-cgi-2.0.3, wai-app-file-cgi-2.0.2, wai-app-file-cgi-2.0.1, wai-app-file-cgi-2.0.0, wai-app-file-cgi-0.8.7, wai-app-file-cgi-0.8.6, wai-app-file-cgi-0.8.5, wai-app-file-cgi-0.8.4, wai-app-file-cgi-0.8.3, wai-app-file-cgi-0.8.2, wai-app-file-cgi-0.8.1, wai-app-file-cgi-0.8.0, wai-app-file-cgi-0.7.2, wai-app-file-cgi-0.7.1, wai-app-file-cgi-0.7.0, wai-app-file-cgi-0.6.0, wai-app-file-cgi-0.5.10, wai-app-file-cgi-0.5.9, wai-app-file-cgi-0.5.8, wai-app-file-cgi-0.5.7, wai-app-file-cgi-0.5.6.2, wai-app-file-cgi-0.5.6.1, wai-app-file-cgi-0.5.6, wai-app-file-cgi-0.5.5, wai-app-file-cgi-0.5.4, wai-app-file-cgi-0.5.3, wai-app-file-cgi-0.5.2, wai-app-file-cgi-0.5.1, wai-app-file-cgi-0.5.0, wai-app-file-cgi-0.4.4, wai-app-file-cgi-0.4.3, wai-app-file-cgi-0.4.2, wai-app-file-cgi-0.4.1, wai-app-file-cgi-0.4.0, wai-app-file-cgi-0.3.5, wai-app-file-cgi-0.3.4, wai-app-file-cgi-0.3.3 (constraint from user target requires ==0.3.2) trying: wai-app-file-cgi-0.3.2 trying: base-4.9.0.0/installed-4.9... (dependency of wai-app-file-cgi-0.3.2) trying: directory-1.2.6.2/installed-1.2... (dependency of wai-app-file-cgi-0.3.2) next goal: haskell98 (dependency of wai-app-file-cgi-0.3.2) rejecting: haskell98-2.0.0.3 (conflict: base==4.9.0.0/installed-4.9..., haskell98 => base>=4.7 && <4.8) rejecting: haskell98-2.0.0.2 (conflict: base==4.9.0.0/installed-4.9..., haskell98 => base==4.6.*) rejecting: haskell98-2.0.0.1, haskell98-2.0.0.0 (conflict: directory==1.2.6.2/installed-1.2..., haskell98 => directory>=1.1 && <1.2) rejecting: haskell98-1.1.0.1, haskell98-1.1.0.0, haskell98-1.0.1.1 (conflict: base==4.9.0.0/installed-4.9..., haskell98 => base>=3 && <4.6) rejecting: haskell98-1.0.1.0 (conflict: base==4.9.0.0/installed-4.9..., haskell98 => base<4.6) rejecting: haskell98-1.0 (conflict: base==4.9.0.0/installed-4.9..., haskell98 => base<4.3) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).