/usr/share/doc/libghc-haskell-lexer-prof/changelog.Debian.gz is in libghc-haskell-lexer-prof 1.0-9.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libghc-haskell-lexer-prof/../libghc-haskell-lexer-dev/changelog.Debian.gz