Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: servant-lucid (user goal)
rejecting: servant-lucid-0.7.1, servant-lucid-0.7, servant-lucid-0.6.1
(constraint from user target requires ==0.6)
trying: servant-lucid-0.6
trying: base-4.9.0.0/installed-4.9... (dependency of servant-lucid-0.6)
next goal: servant (dependency of servant-lucid-0.6)
rejecting: servant-0.9.1.1, servant-0.9.1, servant-0.9.0.1, servant-0.9,
servant-0.8.1, servant-0.8, servant-0.7.1, servant-0.7 (conflict:
servant-lucid => servant==0.6.*)
rejecting: servant-0.6.1, servant-0.6 (conflict:
base==4.9.0.0/installed-4.9..., servant => base>=4.7 && <4.9)
rejecting: servant-0.5, servant-0.4.4.7, servant-0.4.4.6, servant-0.4.4.5,
servant-0.4.4.4, servant-0.4.4.3, servant-0.4.4.2, servant-0.4.4,
servant-0.4.3.1, servant-0.4.3, servant-0.4.2, servant-0.4.1, servant-0.4.0,
servant-0.2.2, servant-0.2.1, servant-0.2, servant-0.1 (conflict:
servant-lucid => servant==0.6.*)
Dependency tree exhaustively searched.