/usr/lib/ghc-doc/hoogle/EdisonCore.txt is in libghc-edison-core-doc 1.2.2-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-edison-core-doc/html/EdisonCore.txt