Resolving dependencies... cabal: Could not resolve dependencies: next goal: yesod-text-markdown (user goal) rejecting: yesod-text-markdown-0.1.8, 0.1.7, 0.1.6, 0.1.5, 0.1.4, 0.1.3, 0.1.2, 0.1.1 (global constraint requires ==0.1.0.0) trying: yesod-text-markdown-0.1.0.0 trying: hamlet-1.2.0 (dependency of yesod-text-markdown-0.1.0.0) trying: shakespeare-2.0.7 (dependency of hamlet-1.2.0) trying: scientific-0.3.4.2 (dependency of shakespeare-2.0.7) trying: hashable-1.2.3.3 (dependency of scientific-0.3.4.2) trying: aeson-0.10.0.0 (dependency of shakespeare-2.0.7) next goal: text (dependency of yesod-text-markdown-0.1.0.0) rejecting: text-1.2.1.3, 1.2.1.2, 1.2.1.1, 1.2.1.0, 1.2.0.6, 1.2.0.5, 1.2.0.4, 1.2.0.3, 1.2.0.2, 1.2.0.0, 1.1.1.4, 1.1.1.3, 1.1.1.2, 1.1.1.1, 1.1.1.0, 1.1.0.1, 1.1.0.0, 1.0.0.1, 1.0.0.0 (conflict: yesod-text-markdown => text>=0.11 && <1.0) rejecting: text-0.11.3.1, 0.11.3.0, 0.11.2.3, 0.11.2.2, 0.11.2.1, 0.11.2.0, 0.11.1.13, 0.11.1.12, 0.11.1.11, 0.11.1.10, 0.11.1.9, 0.11.1.8, 0.11.1.7, 0.11.1.6, 0.11.1.5, 0.11.1.3, 0.11.1.2, 0.11.1.1, 0.11.1.0, 0.11.0.8, 0.11.0.7, 0.11.0.6, 0.11.0.5 (conflict: aeson => text>=1.1.1.0) rejecting: text-0.11.0.4, 0.11.0.3, 0.11.0.2, 0.11.0.1, 0.11.0.0 (conflict: hashable => text>=0.11.0.5) rejecting: text-0.10.0.2, 0.10.0.1, 0.10.0.0, 0.9.1.0, 0.9.0.1, 0.9.0.0, 0.8.1.0, 0.8.0.0, 0.7.2.1, 0.7.1.0, 0.7.0.1, 0.7, 0.6, 0.5, 0.4, 0.3, 0.2, 0.1 (conflict: yesod-text-markdown => text>=0.11 && <1.0) Backjump limit reached (change with --max-backjumps).