/usr/lib/ghc-doc/hoogle/xml-conduit.txt is in libghc-xml-conduit-doc 1.1.0.9-1build2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-xml-conduit-doc/html/xml-conduit.txt