/usr/ is in libghc-extensible-exceptions-prof 0.1.1.4-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/haskell-packages/
/usr/lib/haskell-packages/ghc/
/usr/lib/haskell-packages/ghc/lib/
/usr/lib/haskell-packages/ghc/lib/extensible-exceptions-0.1.1.4/
/usr/lib/haskell-packages/ghc/lib/extensible-exceptions-0.1.1.4/ghc-7.6.3/
/usr/lib/haskell-packages/ghc/lib/extensible-exceptions-0.1.1.4/ghc-7.6.3/libHSextensible-exceptions-0.1.1.4_p.a
/usr/lib/haskell-packages/ghc/lib/extensible-exceptions-0.1.1.4/ghc-7.6.3/Control/
/usr/lib/haskell-packages/ghc/lib/extensible-exceptions-0.1.1.4/ghc-7.6.3/Control/Exception/
/usr/lib/haskell-packages/ghc/lib/extensible-exceptions-0.1.1.4/ghc-7.6.3/Control/Exception/Extensible.p_hi
/usr/share/
/usr/share/doc/
/usr/share/doc/libghc-extensible-exceptions-prof/
/usr/share/doc/libghc-extensible-exceptions-prof/copyright
/usr/share/doc/libghc-extensible-exceptions-prof/changelog.Debian.gz