Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: fb-persistent (user goal)
rejecting: fb-persistent-0.3.5, 0.3.4, 0.3.3, 0.3.2, 0.3.1, 0.3, 0.2.1, 0.2,
0.1.4, 0.1.3, 0.1.2, 0.1.1 (global constraint requires ==0.1)
trying: fb-persistent-0.1
trying: base-4.8.1.0/installed-4f7... (dependency of fb-persistent-0.1)
next goal: persistent (dependency of fb-persistent-0.1)
rejecting: persistent-2.2.2.1, 2.2.2, 2.2.1, 2.2, 2.1.6, 2.1.5, 2.1.4, 2.1.3,
2.1.2, 2.1.1.7, 2.1.1.6, 2.1.1.5, 2.1.1.4, 2.1.1.3, 2.1.1.2, 2.1.1.1, 2.1.1,
2.1.0.2, 2.1.0.1, 2.1, 1.3.3, 1.3.2, 1.3.1.1, 1.3.1, 1.3.0.6, 1.3.0.5,
1.3.0.4, 1.3.0.3, 1.3.0.2, 1.3.0, 1.2.3.3, 1.2.3.2, 1.2.3.0, 1.2.2.0, 1.2.1.2,
1.2.1.1, 1.2.1, 1.2.0.2, 1.2.0.1, 1.2.0, 1.1.5.1, 1.1.5, 1.1.4, 1.1.3.2,
1.1.3.1, 1.1.3, 1.1.2, 1.1.0.1, 1.1.0, 1.0.2.2, 1.0.2.1, 1.0.2, 1.0.1.3,
1.0.1.2, 1.0.1.1, 1.0.1, 1.0.0, 0.9.0.4, 0.9.0.3, 0.9.0.2, 0.9.0.1, 0.9.0
(conflict: fb-persistent => persistent>=0.7 && <0.9)
trying: persistent-0.8.0.2
next goal: aeson (dependency of persistent-0.8.0.2)
rejecting: aeson-0.10.0.0, 0.9.0.1, 0.9.0.0, 0.8.1.1, 0.8.1.0, 0.8.0.2,
0.7.0.6, 0.7.0.4 (conflict: persistent => aeson>=0.5 && <0.7)
trying: aeson-0.6.2.1
next goal: template-haskell (dependency of aeson-0.6.2.1)
rejecting: template-haskell-2.10.0.0/installed-90e..., 2.10.0.0 (conflict:
aeson => template-haskell>=2.4 && <2.10)
rejecting: template-haskell-2.9.0.0 (conflict: base==4.8.1.0/installed-4f7...,
template-haskell => base==4.7.*)
rejecting: template-haskell-2.8.0.0 (conflict: base==4.8.1.0/installed-4f7...,
template-haskell => base==4.6.*)
rejecting: template-haskell-2.7.0.0 (conflict: base==4.8.1.0/installed-4f7...,
template-haskell => base==4.5.*)
rejecting: template-haskell-2.6.0.0 (conflict: base==4.8.1.0/installed-4f7...,
template-haskell => base==4.4.*)
rejecting: template-haskell-2.5.0.0 (conflict: base==4.8.1.0/installed-4f7...,
template-haskell => base==4.3.*)
rejecting: template-haskell-2.4.0.1 (conflict: base==4.8.1.0/installed-4f7...,
template-haskell => base==4.2.*)
rejecting: template-haskell-2.4.0.0 (conflict: base==4.8.1.0/installed-4f7...,
template-haskell => base>=3 && <4.3)
rejecting: template-haskell-2.3.0.1, 2.3.0.0, 2.2.0.0 (conflict: aeson =>
template-haskell>=2.4 && <2.10)
Backjump limit reached (change with --max-backjumps).