Resolving dependencies...
cabal: Could not resolve dependencies:
trying: elm-repl-0.4.1 (user goal)
trying: base-4.8.1.0/installed-4f7... (dependency of elm-repl-0.4.1)
trying: mtl-2.2.1 (dependency of elm-repl-0.4.1)
trying: transformers-0.4.2.0/installed-21d... (dependency of mtl-2.2.1)
trying: elm-package-0.5 (dependency of elm-repl-0.4.1)
next goal: optparse-applicative (dependency of elm-package-0.5)
rejecting: optparse-applicative-0.12.0.0, 0.11.0.2, 0.11.0.1, 0.11.0
(conflict: elm-package => optparse-applicative>=0.8.1 && <0.11)
rejecting: optparse-applicative-0.10.0, 0.9.1.1, 0.9.1, 0.9.0 (conflict:
base==4.8.1.0/installed-4f7..., optparse-applicative => base>=4 && <4.8)
rejecting: optparse-applicative-0.8.1 (conflict:
transformers==0.4.2.0/installed-21d..., optparse-applicative =>
transformers>=0.2 && <0.4)
rejecting: optparse-applicative-0.8.0.1, 0.8.0, 0.7.0.2, 0.7.0.1, 0.7.0,
0.6.0, 0.5.2.1, 0.5.2, 0.5.1, 0.5.0, 0.4.3, 0.4.2, 0.4.1, 0.4.0, 0.3.2, 0.3.1,
0.3.0, 0.2.0, 0.1.1, 0.1.0, 0.0.1 (conflict: elm-package =>
optparse-applicative>=0.8.1 && <0.11)
Dependency tree exhaustively searched.