/usr/lib/ghc-doc/hoogle/libghc-hsx2hs-doc.txt is in libghc-hsx2hs-doc 0.13.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hsx2hs-doc/html/hsx2hs.txt