libgtkhtml-4_0-0 from openSUSE:Backports:SLE-15 project
Seleccione o seu sistema operativo
Engadir repositorio e instalar manualmente
Para standard execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/openSUSE:Backports:SLE-15/standard/openSUSE:Backports:SLE-15.repo zypper refresh zypper install libgtkhtml-4_0-0