/usr/lib/ is in libghc-test-framework-quickcheck2-prof 0.3.0.3-2+b2.
This file is owned by root:root, with mode 0o755.
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/usr/lib/haskell-packages/
/usr/lib/haskell-packages/ghc/
/usr/lib/haskell-packages/ghc/lib/
/usr/lib/haskell-packages/ghc/lib/test-framework-quickcheck2-0.3.0.3/
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/usr/lib/haskell-packages/ghc/lib/test-framework-quickcheck2-0.3.0.3/ghc-7.6.3/Test/
/usr/lib/haskell-packages/ghc/lib/test-framework-quickcheck2-0.3.0.3/ghc-7.6.3/Test/Framework/
/usr/lib/haskell-packages/ghc/lib/test-framework-quickcheck2-0.3.0.3/ghc-7.6.3/Test/Framework/Providers//
/usr/lib/haskell-packages/ghc/lib/test-framework-quickcheck2-0.3.0.3/ghc-7.6.3/Test/Framework/Providers/QuickCheck2.p_hi
/usr/lib/haskell-packages/ghc/lib/test-framework-quickcheck2-0.3.0.3/ghc-7.6.3/libHStest-framework-quickcheck2-0.3.0.3_p.a