Resolving dependencies...
cabal: Could not resolve dependencies:
[__0] trying: partial-isomorphisms-0.2.3.0 (user goal)
[__1] next goal: template-haskell (dependency of partial-isomorphisms)
[__1] rejecting: template-haskell-2.16.0.0/installed-2.16.0.0 (conflict:
partial-isomorphisms => template-haskell>=2.17)
[__1] rejecting: template-haskell-2.17.0.0, template-haskell-2.16.0.0,
template-haskell-2.15.0.0, template-haskell-2.14.0.0,
template-haskell-2.13.0.0, template-haskell-2.12.0.0,
template-haskell-2.11.1.0, template-haskell-2.11.0.0,
template-haskell-2.10.0.0, template-haskell-2.9.0.0, template-haskell-2.8.0.0,
template-haskell-2.7.0.0, template-haskell-2.6.0.0, template-haskell-2.5.0.0,
template-haskell-2.4.0.1, template-haskell-2.4.0.0, template-haskell-2.3.0.1,
template-haskell-2.3.0.0, template-haskell-2.2.0.0 (constraint from
non-upgradeable package requires installed instance)
[__1] fail (backjumping, conflict set: partial-isomorphisms, template-haskell)
After searching the rest of the dependency tree exhaustively, these were the
goals I've had most trouble fulfilling: template-haskell, partial-isomorphisms