/usr/lib/ghc-doc/hoogle/irc.txt is in libghc-irc-doc 0.5.1.0-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-irc-doc/html/irc.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-irc-doc/html/irc.txt