Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: acme-everything (user goal)
rejecting: acme-everything-2015.5.4.1 (global constraint requires ==2015.5.4)
trying: acme-everything-2015.5.4
trying: base-4.7.0.1/installed-e4b... (dependency of acme-everything-2015.5.4)
trying: yesod-transloadit-0.2.0.0 (dependency of acme-everything-2015.5.4)
trying: yesod-core-1.4.9.1 (dependency of yesod-transloadit-0.2.0.0)
trying: monad-control-1.0.0.4 (dependency of yesod-core-1.4.9.1)
trying: twentefp-eventloop-trees-0.1.1.0 (dependency of
acme-everything-2015.5.4)
trying: eventloop-0.4.1.1 (dependency of twentefp-eventloop-trees-0.1.1.0)
next goal: timers (dependency of eventloop-0.4.1.1)
rejecting: timers-0.2.0.2 (conflict: monad-control==1.0.0.4, timers =>
monad-control>=0.3 && <0.4)
rejecting: timers-0.2.0.1 (conflict: base==4.7.0.1/installed-e4b..., timers =>
base>=4.5 && <4.7)
rejecting: timers-0.2.0.0 (conflict: base==4.7.0.1/installed-e4b..., timers =>
base==4.5.*)
rejecting: timers-0.1.0.1, 0.1.0.0 (conflict: eventloop => timers>=0.2 &&
<0.3)
Backjump limit reached (change with --max-backjumps).