For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:juzbun:kde-plasma/openSUSE_Tumbleweed/home:juzbun:kde-plasma.repo
zypper refresh
zypper install grub-customizer
For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:juzbun:kde-plasma/openSUSE_Factory_zSystems/home:juzbun:kde-plasma.repo
zypper refresh
zypper install grub-customizer
For openSUSE Factory RISCV run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:juzbun:kde-plasma/openSUSE_Factory_RISCV/home:juzbun:kde-plasma.repo
zypper refresh
zypper install grub-customizer
For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:juzbun:kde-plasma/openSUSE_Factory_PowerPC/home:juzbun:kde-plasma.repo
zypper refresh
zypper install grub-customizer
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:juzbun:kde-plasma/openSUSE_Factory_ARM/home:juzbun:kde-plasma.repo
zypper refresh
zypper install grub-customizer