/usr/lib/ghc-doc/hoogle/libghc-http-streams-doc.txt is in libghc-http-streams-doc 0.8.3.3-2build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-http-streams-doc/html/http-streams.txt