/usr/lib/ghc-doc/hoogle/libghc-hopenpgp-doc.txt is in libghc-hopenpgp-doc 2.5.5-3build12.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hopenpgp-doc/html/hOpenPGP.txt