/usr/lib/haskell-packages/ is in libghc-data-accessor-mtl-prof 0.2.0.4-1.
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/usr/lib/haskell-packages/ghc/
/usr/lib/haskell-packages/ghc/lib/
/usr/lib/haskell-packages/ghc/lib/data-accessor-mtl-0.2.0.4/
/usr/lib/haskell-packages/ghc/lib/data-accessor-mtl-0.2.0.4/ghc-7.6.3/
/usr/lib/haskell-packages/ghc/lib/data-accessor-mtl-0.2.0.4/ghc-7.6.3/libHSdata-accessor-mtl-0.2.0.4_p.a
/usr/lib/haskell-packages/ghc/lib/data-accessor-mtl-0.2.0.4/ghc-7.6.3/Data/
/usr/lib/haskell-packages/ghc/lib/data-accessor-mtl-0.2.0.4/ghc-7.6.3/Data/Accessor/
/usr/lib/haskell-packages/ghc/lib/data-accessor-mtl-0.2.0.4/ghc-7.6.3/Data/Accessor/Monad/
/usr/lib/haskell-packages/ghc/lib/data-accessor-mtl-0.2.0.4/ghc-7.6.3/Data/Accessor/Monad/MTL/
/usr/lib/haskell-packages/ghc/lib/data-accessor-mtl-0.2.0.4/ghc-7.6.3/Data/Accessor/Monad/MTL/State.p_hi