/usr/lib/ghc-doc/hoogle/libghc-openglraw-doc.txt is in libghc-openglraw-doc 2.4.1.0-5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-openglraw-doc/html/OpenGLRaw.txt