Resolving dependencies... cabal: Could not resolve dependencies: next goal: packdeps (user goal) rejecting: packdeps-0.4.0.3, 0.4.0.2, 0.4.0.1, 0.3.0.1, 0.3.0, 0.2.0, 0.1.0.1 (global constraint requires ==0.0.3) trying: packdeps-0.0.3 trying: packdeps-0.0.3:+web next goal: hamlet (dependency of packdeps-0.0.3:+web) rejecting: hamlet-1.2.0, 1.1.9.2, 1.1.9.1, 1.1.9, 1.1.8.1, 1.1.8, 1.1.7.7, 1.1.7.6, 1.1.7.5, 1.1.7.4, 1.1.7.3, 1.1.7.2, 1.1.7.1, 1.1.7, 1.1.6.4, 1.1.6.3, 1.1.6.2, 1.1.6.1, 1.1.6, 1.1.5, 1.1.4, 1.1.3.1, 1.1.3, 1.1.2, 1.1.1.1, 1.1.1, 1.1.0.3, 1.1.0.2, 1.1.0.1, 1.1.0, 1.0.1.4, 1.0.1.3, 1.0.1.2, 1.0.1.1, 1.0.1, 1.0.0 (conflict: packdeps-0.0.3:web => hamlet==0.10.*) trying: hamlet-0.10.9.1 trying: base-4.7.0.1/installed-e4b... (dependency of hamlet-0.10.9.1) next goal: containers (dependency of hamlet-0.10.9.1) rejecting: containers-0.5.5.1/installed-23e..., 0.5.6.3, 0.5.6.2, 0.5.6.1, 0.5.6.0, 0.5.5.1, 0.5.5.0, 0.5.4.0, 0.5.3.1, 0.5.3.0, 0.5.2.1, 0.5.2.0, 0.5.1.0, 0.5.0.0 (conflict: hamlet => containers>=0.2 && <0.5) trying: containers-0.4.2.1 next goal: template-haskell (dependency of hamlet-0.10.9.1) rejecting: template-haskell-2.9.0.0/installed-3af... (conflict: containers==0.4.2.1, template-haskell => containers==0.5.5.1/installed-23e...) rejecting: template-haskell-2.10.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base==4.8.*) rejecting: template-haskell-2.9.0.0 (conflict: containers==0.4.2.1, template-haskell => containers==0.5.*) rejecting: template-haskell-2.8.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base==4.6.*) rejecting: template-haskell-2.7.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base==4.5.*) rejecting: template-haskell-2.6.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base==4.4.*) rejecting: template-haskell-2.5.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base==4.3.*) rejecting: template-haskell-2.4.0.1 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base==4.2.*) rejecting: template-haskell-2.4.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base>=3 && <4.3) rejecting: template-haskell-2.3.0.1, 2.3.0.0, 2.2.0.0 (conflict: base==4.7.0.1/installed-e4b..., template-haskell => base<4.3) Dependency tree exhaustively searched.