For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:aeneas_jaissle:kolab_test:2/openSUSE_Tumbleweed/home:aeneas_jaissle:kolab_test:2.repo
zypper refresh
zypper install swig
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:aeneas_jaissle:kolab_test:2/15.6/home:aeneas_jaissle:kolab_test:2.repo
zypper refresh
zypper install swig
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:aeneas_jaissle:kolab_test:2/15.5/home:aeneas_jaissle:kolab_test:2.repo
zypper refresh
zypper install swig