/usr/lib/haskell-packages/ is in libghc-gsasl-prof 0.3.6-4+b1.
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/usr/lib/haskell-packages/ghc/lib/
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/
/usr/lib/haskell-packages/ghc/
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