Resolving dependencies... cabal: Could not resolve dependencies: next goal: reactive-banana-wx (user goal) rejecting: reactive-banana-wx-1.0.0.0, 0.9.0.2, 0.9.0.1, 0.9.0.0, 0.8.0.4 (global constraint requires ==0.8.0.0) trying: reactive-banana-wx-0.8.0.0 next goal: wx (dependency of reactive-banana-wx-0.8.0.0) rejecting: wx-0.92.1.0, 0.92.0.0, 0.91.0.0 (conflict: reactive-banana-wx => wx(>=0.13.2.1 && <0.90) || (>=0.90.0.1 && <0.91)) trying: wx-0.90.1.0 trying: stm-2.4.4 (dependency of wx-0.90.1.0) trying: array-0.5.1.0/installed-d42... (dependency of stm-2.4.4) next goal: wxcore (dependency of reactive-banana-wx-0.8.0.0) rejecting: wxcore-0.92.1.0, 0.92.0.0, 0.91.0.0 (conflict: reactive-banana-wx => wxcore(>=0.13.2.1 && <0.90) || (>=0.90.0.1 && <0.91)) trying: wxcore-0.90.1.1 rejecting: wxcore-0.90.1.1:+splitbase (conflict: array==0.5.1.0/installed-d42..., wxcore-0.90.1.1:splitbase => array>=0.2 && <0.5) rejecting: wxcore-0.90.1.1:-splitbase (conflict: array==0.5.1.0/installed-d42..., wxcore-0.90.1.1:splitbase => array>=0.1 && <0.3) Backjump limit reached (change with --max-backjumps).