Resolving dependencies...
cabal: Could not resolve dependencies:
trying: base-4.9.0.0/installed-4.9... (dependency of elm-repl-0.4.1)
trying: transformers-0.5.2.0/installed-0.5... (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-0.13.0.0, optparse-applicative-0.12.1.0,
optparse-applicative-0.12.0.0, optparse-applicative-0.11.0.2,
optparse-applicative-0.11.0.1, optparse-applicative-0.11.0 (conflict:
elm-package => optparse-applicative>=0.8.1 && <0.11)
rejecting: optparse-applicative-0.10.0, optparse-applicative-0.9.1.1,
optparse-applicative-0.9.1, optparse-applicative-0.9.0 (conflict:
base==4.9.0.0/installed-4.9..., optparse-applicative => base>=4 && <4.8)
rejecting: optparse-applicative-0.8.1 (conflict:
transformers==0.5.2.0/installed-0.5..., optparse-applicative =>
transformers>=0.2 && <0.4)
rejecting: optparse-applicative-0.8.0.1, optparse-applicative-0.8.0,
optparse-applicative-0.7.0.2, optparse-applicative-0.7.0.1,
optparse-applicative-0.7.0, optparse-applicative-0.6.0,
optparse-applicative-0.5.2.1, optparse-applicative-0.5.2,
optparse-applicative-0.5.1, optparse-applicative-0.5.0,
optparse-applicative-0.4.3, optparse-applicative-0.4.2,
optparse-applicative-0.4.1, optparse-applicative-0.4.0,
optparse-applicative-0.3.2, optparse-applicative-0.3.1,
optparse-applicative-0.3.0, optparse-applicative-0.2.0,
optparse-applicative-0.1.1, optparse-applicative-0.1.0,
optparse-applicative-0.0.1 (conflict: elm-package =>
optparse-applicative>=0.8.1 && <0.11)
Dependency tree exhaustively searched.