/usr/lib/ghc-doc/hoogle/strict.txt is in libghc-strict-doc 0.3.2-7.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-strict-doc/html/strict.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-strict-doc/html/strict.txt