Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: http-enumerator (user goal)
rejecting: http-enumerator-0.7.3.3, http-enumerator-0.7.3.2,
http-enumerator-0.7.3.1, http-enumerator-0.7.3, http-enumerator-0.7.2.5,
http-enumerator-0.7.2.4, http-enumerator-0.7.2.3, http-enumerator-0.7.2.2,
http-enumerator-0.7.2.1, http-enumerator-0.7.2, http-enumerator-0.7.1.8,
http-enumerator-0.7.1.7, http-enumerator-0.7.1.6, http-enumerator-0.7.1.5,
http-enumerator-0.7.1.4, http-enumerator-0.7.1.3, http-enumerator-0.7.1.2,
http-enumerator-0.7.1.1, http-enumerator-0.7.1, http-enumerator-0.7.0,
http-enumerator-0.6.7, http-enumerator-0.6.6, http-enumerator-0.6.5.6,
http-enumerator-0.6.5.5, http-enumerator-0.6.5.4, http-enumerator-0.6.5.3,
http-enumerator-0.6.5.2, http-enumerator-0.6.5.1, http-enumerator-0.6.5,
http-enumerator-0.6.4.3, http-enumerator-0.6.4.2, http-enumerator-0.6.4.1,
http-enumerator-0.6.4, http-enumerator-0.6.3, http-enumerator-0.6.2.1,
http-enumerator-0.6.2, http-enumerator-0.6.0.2, http-enumerator-0.6.0.1,
http-enumerator-0.6.0, http-enumerator-0.5.1, http-enumerator-0.5.0,
http-enumerator-0.4.1, http-enumerator-0.4.0.1, http-enumerator-0.4.0,
http-enumerator-0.3.1, http-enumerator-0.3.0, http-enumerator-0.2.1.5,
http-enumerator-0.2.1.4, http-enumerator-0.2.1.3, http-enumerator-0.2.1.2,
http-enumerator-0.2.1.1, http-enumerator-0.2.1, http-enumerator-0.2.0.4
(constraint from user target requires ==0.2.0.3)
trying: http-enumerator-0.2.0.3
trying: base-4.9.0.0/installed-4.9... (dependency of http-enumerator-0.2.0.3)
next goal: network-bytestring (dependency of http-enumerator-0.2.0.3)
rejecting: network-bytestring-0.1.3.4, network-bytestring-0.1.3.3,
network-bytestring-0.1.3.2, network-bytestring-0.1.3.1 (conflict:
base==4.9.0.0/installed-4.9..., network-bytestring => base<4.4)
rejecting: network-bytestring-0.1.3 (conflict: base==4.9.0.0/installed-4.9...,
network-bytestring => base<4.3)
rejecting: network-bytestring-0.1.2.1, network-bytestring-0.1.2,
network-bytestring-0.1.1.4, network-bytestring-0.1.1.3,
network-bytestring-0.1.1.2, network-bytestring-0.1.1.1,
network-bytestring-0.1.1, network-bytestring-0.1 (conflict: http-enumerator =>
network-bytestring>=0.1.3 && <0.2)
Dependency tree exhaustively searched.