Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: buildwrapper (user goal)
rejecting: buildwrapper-0.9.1, buildwrapper-0.9.0, buildwrapper-0.8.11,
buildwrapper-0.8.10, buildwrapper-0.8.9, buildwrapper-0.8.8,
buildwrapper-0.8.7 (constraint from user target requires ==0.8.6)
trying: buildwrapper-0.8.6
trying: time-1.6.0.1/installed-1.6... (dependency of buildwrapper-0.8.6)
trying: scientific-0.3.4.9 (dependency of attoparsec-0.11.3.4)
next goal: aeson (dependency of buildwrapper-0.8.6)
rejecting: aeson-1.0.2.1, aeson-1.0.2.0, aeson-1.0.1.0, aeson-1.0.0.0,
aeson-0.11.2.1, aeson-0.11.2.0, aeson-0.11.1.4, aeson-0.11.1.3,
aeson-0.11.1.2, aeson-0.11.1.1, aeson-0.11.1.0, aeson-0.11.0.0, aeson-0.9.0.1,
aeson-0.9.0.0, aeson-0.8.1.1, aeson-0.8.1.0, aeson-0.8.0.2 (conflict:
buildwrapper => aeson>=0.7 && <0.8)
rejecting: aeson-0.7.0.6 (conflict: time==1.6.0.1/installed-1.6..., aeson =>
time<1.5)
rejecting: aeson-0.7.0.4 (conflict: scientific==0.3.4.9, aeson =>
scientific>=0.2 && <0.3)
rejecting: aeson-0.6.2.1, aeson-0.6.2.0, aeson-0.6.1.0, aeson-0.6.0.2,
aeson-0.6.0.1, aeson-0.6.0.0, aeson-0.5.0.0, aeson-0.4.0.1, aeson-0.4.0.0,
aeson-0.3.2.14, aeson-0.3.2.13, aeson-0.3.2.12, aeson-0.3.2.11,
aeson-0.3.2.10, aeson-0.3.2.9, aeson-0.3.2.8, aeson-0.3.2.7, aeson-0.3.2.6,
aeson-0.3.2.5, aeson-0.3.2.4, aeson-0.3.2.3, aeson-0.3.2.2, aeson-0.3.2.1,
aeson-0.3.2.0, aeson-0.3.1.1, aeson-0.3.1.0, aeson-0.3.0.0, aeson-0.2.0.0,
aeson-0.1.0.0, aeson-0.10.0.0, aeson-0.8.0.1, aeson-0.8.0.0 (conflict:
buildwrapper => aeson>=0.7 && <0.8)
rejecting: aeson-0.7.0.5, aeson-0.7.0.3, aeson-0.7.0.2, aeson-0.7.0.1,
aeson-0.7.0.0 (conflict: time==1.6.0.1/installed-1.6..., aeson => time<1.5)
Dependency tree exhaustively searched.