/usr/lib/ghc-doc/hoogle/libghc-djinn-ghc-doc.txt is in libghc-djinn-ghc-doc 0.0.2.3-4build2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-djinn-ghc-doc/html/djinn-ghc.txt