/usr/lib/ghc-doc/hoogle/bzlib.txt is in libghc-bzlib-doc 0.5.0.4-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-bzlib-doc/html/bzlib.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-bzlib-doc/html/bzlib.txt