Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: tip-haskell-frontend (user goal)
rejecting: tip-haskell-frontend-0.2, tip-haskell-frontend-0.1.1 (constraint
from user target requires ==0.1)
trying: tip-haskell-frontend-0.1
trying: base-4.9.0.0/installed-4.9... (dependency of tip-haskell-frontend-0.1)
next goal: tip-lib (dependency of tip-haskell-frontend-0.1)
rejecting: tip-lib-0.2.2, tip-lib-0.2.1, tip-lib-0.2, tip-lib-0.1.2,
tip-lib-0.1.1 (conflict: tip-haskell-frontend => tip-lib==0.1)
rejecting: tip-lib-0.1 (conflict: base==4.9.0.0/installed-4.9..., tip-lib =>
base<0)
Dependency tree exhaustively searched.