/usr/lib/ghc-doc/hoogle/iconv.txt is in libghc-iconv-doc 0.4.1.1-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-iconv-doc/html/iconv.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-iconv-doc/html/iconv.txt