haskell@gentoo.org Gentoo Haskell Due to a cabal/hackage defect, curly braces cannot be adequately displayed here. Please see <https://github.com/DanBurton/lens-family-th#readme> for a proper description of this package. (See <https://github.com/haskell/cabal/issues/968> for the ticket I created regarding the defect.) DanBurton/lens-family-th