Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: remote-debugger (user goal)
rejecting: remote-debugger-0.2.2 (constraint from user target requires
==0.2.1)
trying: remote-debugger-0.2.1
next goal: ghc (dependency of remote-debugger-0.2.1)
rejecting: ghc-8.0.1.20161018/installed-8.0... (conflict: remote-debugger =>
ghc==7.8.3)
Dependency tree exhaustively searched.