/usr/share/doc/libghc-generics-sop-prof/changelog.Debian.gz is in libghc-generics-sop-prof 0.3.1.0-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libghc-generics-sop-prof/../libghc-generics-sop-dev/changelog.Debian.gz