Resolving dependencies... cabal: Could not resolve dependencies: next goal: maid (user goal) rejecting: maid-2014.10.14, 2014.8.31, 2013.9.14, 2013.9.13, 2012.1.19, 2011.10.13, 2011.10.12, 2011.6.21, 2011.6.20, 2010.9.29, 2010.9.19, 2010.9.9.1, 2010.9.9, 2010.4.24, 2009.12.20, 2009.8.25, 2009.8.18, 2009.8.16, 2009.7.25, 2009.7.24.1 (global constraint requires ==2009.7.24) trying: maid-2009.7.24 trying: base-4.7.0.1/installed-e4b... (dependency of maid-2009.7.24) next goal: hack-handler-simpleserver (dependency of maid-2009.7.24) rejecting: hack-handler-simpleserver-0.2.2, 0.2.1, 0.2.0.2, 0.2.0.1, 0.2.0 (conflict: unix => bytestring==0.10.4.0/installed-9f4..., hack-handler-simpleserver => bytestring>=0.9.1.4 && <0.10) trying: hack-handler-simpleserver-0.0.1 next goal: web-encodings (dependency of hack-handler-simpleserver-0.0.1) rejecting: web-encodings-0.3.0.9, 0.3.0.8 (conflict: unix => bytestring==0.10.4.0/installed-9f4..., web-encodings => bytestring>=0.9.1.4 && <0.10) rejecting: web-encodings-0.3.0.7 (conflict: haskell98 => time==1.4.2/installed-bf9..., web-encodings => time>=1.1.2.4 && <1.4) rejecting: web-encodings-0.3.0.6, 0.3.0.5, 0.3.0.4, 0.3.0.3, 0.3.0.2, 0.3.0.1, 0.3.0, 0.2.6.2 (conflict: haskell98 => time==1.4.2/installed-bf9..., web-encodings => time>=1.1.2.4 && <1.3) rejecting: web-encodings-0.2.6.1, 0.2.6, 0.2.5, 0.2.4, 0.2.3, 0.2.2, 0.2.1, 0.2.0.1, 0.2.0 (conflict: haskell98 => time==1.4.2/installed-bf9..., web-encodings => time>=1.1.2.4 && <1.2) trying: web-encodings-0.0.1 next goal: bytestring-class (dependency of web-encodings-0.0.1) rejecting: bytestring-class-0.0.0.1, 0.0.0 (conflict: base==4.7.0.1/installed-e4b..., bytestring-class => base<4.4) Dependency tree exhaustively searched.