/usr/lib/ghc-doc/hoogle/hsql.txt is in libghc-hsql-doc 1.8.2-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hsql-doc/html/hsql.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-hsql-doc/html/hsql.txt