Resolving dependencies...
cabal: Could not resolve dependencies:
trying: syntax-example-1.0.0.0 (user goal)
trying: base-4.9.0.0/installed-4.9... (dependency of syntax-example-1.0.0.0)
next goal: syntax-printer (dependency of syntax-example-1.0.0.0)
rejecting: syntax-printer-1.0.0.0 (conflict: base==4.9.0.0/installed-4.9...,
syntax-printer => base>=4.7 && <4.8)
rejecting: syntax-printer-0.1.0.0 (conflict: syntax-example =>
syntax-printer>=1)
Dependency tree exhaustively searched.