Resolving dependencies... cabal: Could not resolve dependencies: next goal: hoauth2 (user goal) rejecting: hoauth2-0.5.7, hoauth2-0.5.6.0, hoauth2-0.5.5.0, hoauth2-0.5.4.0, hoauth2-0.5.3.1, hoauth2-0.5.3, hoauth2-0.5.2, hoauth2-0.5.1, hoauth2-0.5.0.1, hoauth2-0.5.0, hoauth2-0.4.8, hoauth2-0.4.7, hoauth2-0.4.6, hoauth2-0.4.5, hoauth2-0.4.4, hoauth2-0.4.3, hoauth2-0.4.2, hoauth2-0.4.1, hoauth2-0.4.0, hoauth2-0.3.7, hoauth2-0.3.6.1, hoauth2-0.3.6, hoauth2-0.3.5, hoauth2-0.3.0, hoauth2-0.2.6, hoauth2-0.2.5.1, hoauth2-0.2.5, hoauth2-0.2.4, hoauth2-0.2.3, hoauth2-0.2.2, hoauth2-0.2.0, hoauth2-0.1.2 (constraint from user target requires ==0.1) trying: hoauth2-0.1 trying: http-types-0.9.1 (dependency of hoauth2-0.1) trying: text-1.2.2.1 (dependency of http-types-0.9.1) next goal: bytestring (dependency of hoauth2-0.1) 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 (conflict: hoauth2 => bytestring>=0.9 && <0.10) rejecting: bytestring-0.9.2.1, bytestring-0.9.2.0, 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 (conflict: text => bytestring>=0.10.4.0) rejecting: 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, bytestring-0.9.0.4, bytestring-0.9.0.3, bytestring-0.9.0.2, bytestring-0.9.0.1, bytestring-0.9 (conflict: http-types => bytestring>=0.9.1.5 && <0.11) Dependency tree exhaustively searched.