/usr/lib/ghc-doc/hoogle/libghc-uuagc-cabal-doc.txt is in libghc-uuagc-cabal-doc 1.0.4.0-10.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-uuagc-cabal-doc/html/uuagc-cabal.txt