Para openSUSE Leap 15.6 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/openSUSE_Leap_15.6/LibreOffice:Factory.repo
zypper refresh
zypper install harfbuzz
Para SLE 15 SP6 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/SLE_15_SP6/LibreOffice:Factory.repo
zypper refresh
zypper install harfbuzz
Para SLE 15 SP5 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/SLE_15_SP5/LibreOffice:Factory.repo
zypper refresh
zypper install harfbuzz
Para SLE 15 SP4 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/SLE_15_SP4/LibreOffice:Factory.repo
zypper refresh
zypper install harfbuzz
Para SLE 12 SP5 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/LibreOffice:Factory/SLE_12_SP5/LibreOffice:Factory.repo
zypper refresh
zypper install harfbuzz