/usr/lib/ghc-doc/hoogle/hsp.txt is in libghc-hsp-doc 0.9.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hsp-doc/html/hsp.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hsp-doc/html/hsp.txt