Resolving dependencies... cabal: Could not resolve dependencies: next goal: network-address (user goal) rejecting: network-address-0.2.0 (global constraint requires ==0.1.0) trying: network-address-0.1.0 next goal: criterion (dependency of network-address-0.1.0) rejecting: criterion-1.1.0.0, 1.0.2.0, 1.0.1.0, 1.0.0.2, 1.0.0.1, 1.0.0.0, 0.8.1.0, 0.8.0.2, 0.8.0.1, 0.8.0.0, 0.6.2.1, 0.6.2.0, 0.6.1.1, 0.6.0.1, 0.6.0.0, 0.5.1.1, 0.5.1.0 (conflict: network-address => criterion==0.5.0.*) trying: criterion-0.5.0.10 trying: filepath-1.3.0.2/installed-158... (dependency of criterion-0.5.0.10) next goal: Cabal (dependency of network-address-0.1.0) rejecting: Cabal-1.18.1.3/installed-715..., 1.22.3.0, 1.22.2.0, 1.22.1.1, 1.22.1.0, 1.22.0.0, 1.20.0.3, 1.20.0.2, 1.20.0.1, 1.20.0.0, 1.18.1.6, 1.18.1.5, 1.18.1.4, 1.18.1.3, 1.18.1.2, 1.18.1.1, 1.18.1, 1.18.0, 1.16.0.3, 1.16.0.2, 1.16.0.1, 1.16.0, 1.14.0, 1.12.0 (conflict: network-address => Cabal>=1.9.2 && <1.11) rejecting: Cabal-1.10.2.0, 1.10.1.0, 1.10.0.0 (conflict: filepath==1.3.0.2/installed-158..., Cabal => filepath>=1 && <1.3) rejecting: Cabal-1.8.0.6, 1.8.0.4, 1.8.0.2, 1.6.0.3, 1.6.0.2, 1.6.0.1, 1.4.0.2, 1.4.0.1, 1.4.0.0, 1.2.4.0, 1.2.3.0, 1.2.2.0, 1.2.1, 1.1.6 (conflict: network-address => Cabal>=1.9.2 && <1.11) Dependency tree exhaustively searched.