/usr/lib/ghc-doc/hoogle/hsemail.txt is in libghc-hsemail-doc 1.7.2-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hsemail-doc/html/hsemail.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hsemail-doc/html/hsemail.txt