Resolving dependencies...
cabal: Could not resolve dependencies:
trying: base-4.9.0.0/installed-4.9... (dependency of nested-routes-7.2.1)
trying: poly-arity-0.0.7 (dependency of nested-routes-7.2.1)
next goal: HList (dependency of poly-arity-0.0.7)
rejecting: HList-0.4.2.0, HList-0.4.1.0, HList-0.4.0.0 (conflict:
base==4.9.0.0/installed-4.9..., HList => base>=4.6 && <4.9)
rejecting: HList-0.3.4.1, HList-0.3.4.0, HList-0.3.2.0, HList-0.3.1.0,
HList-0.3.0.1, HList-0.3.0, HList-0.2.3, HList-0.2.2, HList-0.2.1, HList-0.2,
HList-0.1.1, HList-0.1 (conflict: poly-arity => HList>=0.4)
Dependency tree exhaustively searched.