/usr/lib/ghc-doc/hoogle/libghc-yi-language-doc.txt is in libghc-yi-language-doc 0.2.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-yi-language-doc/html/yi-language.txt