/usr/ is in libghc-diagrams-gtk-prof 0.6.0.1-1build1.
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/diagrams-gtk-0.6.0.1/
/usr/lib/haskell-packages/ghc/lib/diagrams-gtk-0.6.0.1/ghc-7.6.3/
/usr/lib/haskell-packages/ghc/lib/diagrams-gtk-0.6.0.1/ghc-7.6.3/libHSdiagrams-gtk-0.6.0.1_p.a
/usr/lib/haskell-packages/ghc/lib/diagrams-gtk-0.6.0.1/ghc-7.6.3/Diagrams/
/usr/lib/haskell-packages/ghc/lib/diagrams-gtk-0.6.0.1/ghc-7.6.3/Diagrams/Backend/
/usr/lib/haskell-packages/ghc/lib/diagrams-gtk-0.6.0.1/ghc-7.6.3/Diagrams/Backend/Gtk.p_hi
/usr/share/
/usr/share/doc/
/usr/share/doc/libghc-diagrams-gtk-prof/
/usr/share/doc/libghc-diagrams-gtk-prof/copyright
/usr/share/doc/libghc-diagrams-gtk-prof/changelog.Debian.gz