/usr/lib/ghc-doc/hoogle/libghc-recursion-schemes-doc.txt is in libghc-recursion-schemes-doc 5-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-recursion-schemes-doc/html/recursion-schemes.txt