poppler-qt6 from KDE:Qt:6.6 project
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Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/KDE:Qt:6.6/openSUSE_Tumbleweed/KDE:Qt:6.6.repo zypper refresh zypper install poppler-qt6