Resolving dependencies... cabal: Could not resolve dependencies: next goal: yst (user goal) rejecting: yst-0.5.0.4, 0.5.0.3, 0.5.0.2, 0.5.0.1, 0.5, 0.4.1.1, 0.4.1, 0.4.0.1, 0.4, 0.3.1.2, 0.3.1.1, 0.3.1, 0.3.0.1 (global constraint requires ==0.3) trying: yst-0.3 trying: base-4.8.1.0/installed-4f7... (dependency of yst-0.3) trying: pandoc-1.15.2.1 (dependency of yst-0.3) trying: network-2.6.2.1 (dependency of pandoc-1.15.2.1) trying: unix-2.7.1.0/installed-643... (dependency of network-2.6.2.1) next goal: HStringTemplate (dependency of yst-0.3) rejecting: HStringTemplate-0.8.3, 0.8.2, 0.8.1, 0.8, 0.7.3, 0.7.1, 0.7.0, 0.6.12, 0.6.11, 0.6.10, 0.6.9 (conflict: yst => HStringTemplate>=0.6.1 && <0.6.9) trying: HStringTemplate-0.6.8 trying: HStringTemplate-0.6.8:+quasi-quotation rejecting: HStringTemplate-0.6.8:+smaller-base (conflict: unix => time==1.5.0.1/installed-c20..., HStringTemplate-0.6.8:smaller-base => time<1.5) rejecting: HStringTemplate-0.6.8:-smaller-base (conflict: base==4.8.1.0/installed-4f7..., HStringTemplate-0.6.8:smaller-base => base<4) Backjump limit reached (change with --max-backjumps).