While apt-xapian-index gained a depends on python3-xapian, python3-xapian1.3 also provides that package so during an upgrade python3-xapian1.3 is kept and python3-xapian is not installed. If the dependency for apt-xapian-index is made a versioned one then python3-xapian will get installed.
While apt-xapian-index gained a depends on python3-xapian, python3-xapian1.3 also provides that package so during an upgrade python3-xapian1.3 is kept and python3-xapian is not installed. If the dependency for apt-xapian-index is made a versioned one then python3-xapian will get installed.