For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:waveclaw:quassel/openSUSE_Tumbleweed/home:waveclaw:quassel.repo
zypper refresh
zypper install libqt4-x11
For openSUSE Leap 42.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:waveclaw:quassel/openSUSE_Leap_42.1/home:waveclaw:quassel.repo
zypper refresh
zypper install libqt4-x11
For openSUSE Leap 15.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:waveclaw:quassel/openSUSE_Leap_15.2/home:waveclaw:quassel.repo
zypper refresh
zypper install libqt4-x11
For openSUSE Leap 15.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:waveclaw:quassel/openSUSE_Leap_15.1/home:waveclaw:quassel.repo
zypper refresh
zypper install libqt4-x11
For openSUSE Leap 15.0 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:waveclaw:quassel/openSUSE_Leap_15.0/home:waveclaw:quassel.repo
zypper refresh
zypper install libqt4-x11
For openSUSE 13.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:waveclaw:quassel/openSUSE_13.2/home:waveclaw:quassel.repo
zypper refresh
zypper install libqt4-x11