For openSUSE Tumbleweed ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/graphics:darktable/openSUSE_Tumbleweed_ARM/graphics:darktable.repo
zypper refresh
zypper install lens_calibrate
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/graphics:darktable/openSUSE_Tumbleweed/graphics:darktable.repo
zypper refresh
zypper install lens_calibrate
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/graphics:darktable/15.6/graphics:darktable.repo
zypper refresh
zypper install lens_calibrate