/usr/lib/ghc-doc/hoogle/active.txt is in libghc-active-doc 0.1.0.9-1build3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-active-doc/html/active.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-active-doc/html/active.txt