Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: ihaskell-rlangqq (user goal)
rejecting: ihaskell-rlangqq-0.2.2.0, 0.2.1.1, 0.2.0.1 (global constraint
requires ==0.2.0.0)
trying: ihaskell-rlangqq-0.2.0.0
trying: ihaskell-blaze-0.2.0.0 (dependency of ihaskell-rlangqq-0.2.0.0)
trying: classy-prelude-0.12.0 (dependency of ihaskell-blaze-0.2.0.0)
next goal: ihaskell (dependency of ihaskell-rlangqq-0.2.0.0)
rejecting: ihaskell-0.6.3.0, 0.6.2.0, 0.6.1.0, 0.6.0.0 (conflict:
ihaskell-rlangqq => ihaskell>=0.5 && <0.6)
rejecting: ihaskell-0.5.0.0 (conflict: classy-prelude==0.12.0, ihaskell =>
classy-prelude>=0.9.5 && <0.11)
rejecting: ihaskell-0.4.3.0, 0.4.2.0, 0.4.1.0, 0.4.0.0, 0.3.0.4, 0.3.0.3,
0.3.0.2, 0.3.0.1, 0.3.0.0, 0.2.0.5, 0.2.0.4, 0.2.0.3, 0.2.0.2, 0.2.0.1,
0.2.0.0 (conflict: ihaskell-rlangqq => ihaskell>=0.5 && <0.6)
Backjump limit reached (change with --max-backjumps).