/usr/lib/ is in libghc-puremd5-prof 2.1.2.1-8.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/haskell-packages/
/usr/lib/haskell-packages/ghc/
/usr/lib/haskell-packages/ghc/lib/
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-7.10.3/
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-7.10.3/pureMD5-2.1.2.1-Dq26T59K17p49spPbjqu29/
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-7.10.3/pureMD5-2.1.2.1-Dq26T59K17p49spPbjqu29/Data//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-7.10.3/pureMD5-2.1.2.1-Dq26T59K17p49spPbjqu29/Data/Digest//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-7.10.3/pureMD5-2.1.2.1-Dq26T59K17p49spPbjqu29/Data/Digest/Pure//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-7.10.3/pureMD5-2.1.2.1-Dq26T59K17p49spPbjqu29/Data/Digest/Pure/MD5.p_hi
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-7.10.3/pureMD5-2.1.2.1-Dq26T59K17p49spPbjqu29/libHSpureMD5-2.1.2.1-Dq26T59K17p49spPbjqu29_p.a