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-4.8.1.0/installed-4f7... (dependency of maid-2009.7.24) next goal: haskell98 (dependency of maid-2009.7.24) rejecting: haskell98-2.0.0.3 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base>=4.7 && <4.8) rejecting: haskell98-2.0.0.2 (conflict: base==4.8.1.0/installed-4f7..., haskell98 => base==4.6.*) trying: haskell98-2.0.0.1 next goal: array (dependency of haskell98-2.0.0.1) rejecting: array-0.5.1.0/installed-d42..., 0.5.1.0, 0.5.0.0 (conflict: haskell98 => array>=0.3 && <0.5) rejecting: array-0.4.0.1 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.7) rejecting: array-0.4.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.6) rejecting: array-0.3.0.3 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.5) rejecting: array-0.3.0.2, 0.3.0.1 (conflict: base==4.8.1.0/installed-4f7..., array => base>=4.2 && <4.4) rejecting: array-0.3.0.0 (conflict: base==4.8.1.0/installed-4f7..., array => base>=3 && <4.4) rejecting: array-0.2.0.0, 0.1.0.0 (conflict: haskell98 => array>=0.3 && <0.5) Dependency tree exhaustively searched.