/usr/lib/ghc-doc/hoogle/uniplate.txt is in libghc-uniplate-doc 1.6.11-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-uniplate-doc/html/uniplate.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-uniplate-doc/html/uniplate.txt