Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: ecu (user goal)
rejecting: ecu-0.0.8, ecu-0.0.7, ecu-0.0.6, ecu-0.0.5, ecu-0.0.4, ecu-0.0.3,
ecu-0.0.2, ecu-0.0.1 (constraint from user target requires ==0.0.0)
trying: ecu-0.0.0
trying: text-1.2.2.1 (dependency of polyparse-1.12)
next goal: bytestring (dependency of ecu-0.0.0)
rejecting: bytestring-0.10.8.1/installed-0.1..., bytestring-0.10.8.1,
bytestring-0.10.8.0, bytestring-0.10.6.0, bytestring-0.10.4.1,
bytestring-0.10.4.0, bytestring-0.10.2.0, bytestring-0.10.0.2,
bytestring-0.10.0.1, bytestring-0.10.0.0, bytestring-0.9.2.1,
bytestring-0.9.2.0 (conflict: ecu => bytestring>=0.9.1 && <0.9.2)
rejecting: bytestring-0.9.1.10, bytestring-0.9.1.9, bytestring-0.9.1.8,
bytestring-0.9.1.7, bytestring-0.9.1.6, bytestring-0.9.1.5,
bytestring-0.9.1.4, bytestring-0.9.1.3, bytestring-0.9.1.2,
bytestring-0.9.1.1, bytestring-0.9.1.0 (conflict: text =>
bytestring>=0.10.4.0)
rejecting: bytestring-0.9.0.4, bytestring-0.9.0.3, bytestring-0.9.0.2,
bytestring-0.9.0.1, bytestring-0.9 (conflict: ecu => bytestring>=0.9.1 &&
<0.9.2)
Dependency tree exhaustively searched.