/usr/share/gap/pkg/Polycyclic/gap/cohom/ is in gap-polycyclic 2.11-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gap/pkg/Polycyclic/gap/cohom/abelaut.gd
/usr/share/gap/pkg/Polycyclic/gap/cohom/abelaut.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/addgrp.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/cohom.gd
/usr/share/gap/pkg/Polycyclic/gap/cohom/cohom.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/general.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/grpcom.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/grpext.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/intcohom.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/norcom.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/onecohom.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/solabel.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/solcohom.gi
/usr/share/gap/pkg/Polycyclic/gap/cohom/twocohom.gi