/usr/lib/ghc-doc/hoogle/pcap.txt is in libghc-pcap-doc 0.4.5.2-4build1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-pcap-doc/html/pcap.txt
/usr/lib/ghc-doc/hoogle/../../../share/doc/libghc-pcap-doc/html/pcap.txt