/usr/lib/haskell-packages/ is in libghc-gtk-traymanager-prof 0.1.6-3+b2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/haskell-packages/ghc/
/usr/lib/haskell-packages/ghc/lib/
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/gtk-traymanager-0.1.6-4ihw4PtPkuq49eNYcVuoIe//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/gtk-traymanager-0.1.6-4ihw4PtPkuq49eNYcVuoIe/Graphics//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/gtk-traymanager-0.1.6-4ihw4PtPkuq49eNYcVuoIe/Graphics/UI//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/gtk-traymanager-0.1.6-4ihw4PtPkuq49eNYcVuoIe/Graphics/UI/Gtk//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/gtk-traymanager-0.1.6-4ihw4PtPkuq49eNYcVuoIe/Graphics/UI/Gtk/Misc//
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/gtk-traymanager-0.1.6-4ihw4PtPkuq49eNYcVuoIe/Graphics/UI/Gtk/Misc/TrayManager.p_hi
/usr/lib/haskell-packages/ghc/lib/x86_64-linux-ghc-8.0.1/gtk-traymanager-0.1.6-4ihw4PtPkuq49eNYcVuoIe/libHSgtk-traymanager-0.1.6-4ihw4PtPkuq49eNYcVuoIe_p.a