/usr/lib/ghc-doc/hoogle/gloss.txt is in libghc-gloss-doc 1.7.8.3-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-gloss-doc/html/gloss.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-gloss-doc/html/gloss.txt