/usr/lib/ghc-doc/hoogle/resource-pool.txt is in libghc-resource-pool-doc 0.2.1.1-2build3.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-resource-pool-doc/html/resource-pool.txt