Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: twentefp-eventloop-trees (user goal)
rejecting: twentefp-eventloop-trees-0.1.2.4, twentefp-eventloop-trees-0.1.2.3
(constraint from user target requires ==0.1.2.2)
trying: twentefp-eventloop-trees-0.1.2.2
trying: base-4.9.0.0/installed-4.9... (dependency of
twentefp-eventloop-trees-0.1.2.2)
next goal: eventloop (dependency of twentefp-eventloop-trees-0.1.2.2)
rejecting: eventloop-0.8.2.0, eventloop-0.8.1.2, eventloop-0.8.1.1,
eventloop-0.8.1.0, eventloop-0.8.0.1, eventloop-0.8.0.0 (conflict:
twentefp-eventloop-trees => eventloop>=0.7.0.0 && <0.7.1.0)
rejecting: eventloop-0.7.0.1, eventloop-0.7.0.0 (conflict:
base==4.9.0.0/installed-4.9..., eventloop => base>=4.8 && <4.9)
rejecting: eventloop-0.6.0.0, eventloop-0.5.1.0, eventloop-0.5.0.0,
eventloop-0.4.1.2, eventloop-0.4.1.1, eventloop-0.4.1.0, eventloop-0.4.0.0,
eventloop-0.3.0.0, eventloop-0.2.1.2, eventloop-0.2.1.1 (conflict:
twentefp-eventloop-trees => eventloop>=0.7.0.0 && <0.7.1.0)
Dependency tree exhaustively searched.