Resolving dependencies... cabal: Could not resolve dependencies: trying: yesod-markdown-0.11.2 (dependency of yesod-bootstrap-0.2.1) trying: texmath-0.9 (dependency of yesod-markdown-0.11.2) next goal: pandoc (dependency of yesod-markdown-0.11.2) rejecting: pandoc-1.19, pandoc-1.18 (conflict: yesod-markdown => pandoc>=1.16 && <1.18) rejecting: pandoc-1.17.2 (conflict: texmath==0.9, pandoc => texmath>=0.8.6.4 && <0.9) rejecting: pandoc-1.17.1 (conflict: texmath==0.9, pandoc => texmath>=0.8.6.2 && <0.9) rejecting: pandoc-1.17.0.3, pandoc-1.17.0.2, pandoc-1.17.0.1, pandoc-1.17, pandoc-1.16.0.2, pandoc-1.16.0.1, pandoc-1.16 (conflict: texmath==0.9, pandoc => texmath>=0.8.4.1 && <0.9) rejecting: pandoc-1.15.2.1, pandoc-1.15.2, pandoc-1.15.1.1, pandoc-1.15.1, pandoc-1.15.0.6, pandoc-1.15.0.5, pandoc-1.15.0.4, pandoc-1.15.0.3, pandoc-1.15.0.2, pandoc-1.14.1, pandoc-1.13.2.1, pandoc-1.13.2, pandoc-1.13.1, pandoc-1.13.0.1, pandoc-1.13, pandoc-1.12.4.2, pandoc-1.12.4, pandoc-1.12.3.3, pandoc-1.12.3.2, pandoc-1.12.3.1, pandoc-1.12.3, pandoc-1.12.2.1, pandoc-1.12.2, pandoc-1.12.1, pandoc-1.12.0.2, pandoc-1.12.0.1, pandoc-1.12, pandoc-1.11.1, pandoc-1.11, pandoc-1.10.1, pandoc-1.10.0.5, pandoc-1.10.0.4, pandoc-1.10.0.3, pandoc-1.10.0.2, pandoc-1.10.0.1, pandoc-1.10, pandoc-1.9.4.5, pandoc-1.9.4.4, pandoc-1.9.4.3, pandoc-1.9.4.2, pandoc-1.9.4.1, pandoc-1.9.4, pandoc-1.9.3, pandoc-1.9.2, pandoc-1.9.1.2, pandoc-1.9.1.1, pandoc-1.9.1, pandoc-1.9.0.5, pandoc-1.9.0.4, pandoc-1.9.0.3, pandoc-1.9.0.2, pandoc-1.9, pandoc-1.8.2.1, pandoc-1.8.2, pandoc-1.8.1.2, pandoc-1.8.1.1, pandoc-1.8.1, pandoc-1.8.0.3, pandoc-1.8.0.2, pandoc-1.8.0.1, pandoc-1.8, pandoc-1.6.0.1, pandoc-1.6, pandoc-1.5.1.1, pandoc-1.5.1, pandoc-1.5.0.1, pandoc-1.5, pandoc-1.4, pandoc-1.3, pandoc-1.2.1, pandoc-1.2, pandoc-1.1, pandoc-1.0.0.1, pandoc-1.0, pandoc-0.46, pandoc-0.45, pandoc-0.44, pandoc-0.43, pandoc-0.42, pandoc-0.41, pandoc-0.4, pandoc-1.15.0.1, pandoc-1.15, pandoc-1.14.0.4, pandoc-1.14.0.3, pandoc-1.14.0.2, pandoc-1.14.0.1, pandoc-1.14 (conflict: yesod-markdown => pandoc>=1.16 && <1.18) Backjump limit reached (currently 2000, change with --max-backjumps or try to run with --reorder-goals).