Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: hyperloglog (user goal)
rejecting: hyperloglog-0.4.0.4, hyperloglog-0.4.0.3, hyperloglog-0.4.0.2,
hyperloglog-0.4.0.1, hyperloglog-0.3.4, hyperloglog-0.3.3.1,
hyperloglog-0.3.3, hyperloglog-0.3.2, hyperloglog-0.3.1, hyperloglog-0.3,
hyperloglog-0.2.3.3, hyperloglog-0.2.3.2 (constraint from user target requires
==0.2.3.1)
trying: hyperloglog-0.2.3.1
trying: base-4.9.0.0/installed-4.9... (dependency of hyperloglog-0.2.3.1)
next goal: safecopy (dependency of hyperloglog-0.2.3.1)
rejecting: safecopy-0.9.2, safecopy-0.9.1, safecopy-0.9.0.1, safecopy-0.9.0
(conflict: hyperloglog => safecopy>=0.8.1 && <0.9)
rejecting: safecopy-0.8.6, safecopy-0.8.5, safecopy-0.8.4, safecopy-0.8.3,
safecopy-0.8.2 (conflict: base==4.9.0.0/installed-4.9..., safecopy =>
base>=4.5 && <4.9)
rejecting: safecopy-0.8.1 (conflict: base==4.9.0.0/installed-4.9..., safecopy
=> base>=4.5 && <4.7)
rejecting: safecopy-0.8.0, safecopy-0.7.2, safecopy-0.7.1, safecopy-0.7.0,
safecopy-0.6.3, safecopy-0.6.2, safecopy-0.6.1, safecopy-0.6.0,
safecopy-0.5.1, safecopy-0.5, safecopy-0.4.3, safecopy-0.4.2, safecopy-0.4.1,
safecopy-0.4, safecopy-0.3, safecopy-0.2, safecopy-0.1 (conflict: hyperloglog
=> safecopy>=0.8.1 && <0.9)
Dependency tree exhaustively searched.