rubygem-growl from devel:languages:ruby:extensions project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby:extensions/openSUSE_Tumbleweed/devel:languages:ruby:extensions.repo
zypper refresh
zypper install rubygem-growl

For 15.6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby:extensions/15.6/devel:languages:ruby:extensions.repo
zypper refresh
zypper install rubygem-growl

For 15.5 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby:extensions/15.5/devel:languages:ruby:extensions.repo
zypper refresh
zypper install rubygem-growl

For openSUSE Leap 15.3 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby:extensions/openSUSE_Leap_15.3/devel:languages:ruby:extensions.repo
zypper refresh
zypper install rubygem-growl

For SLE 12 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/devel:languages:ruby:extensions/SLE_12/devel:languages:ruby:extensions.repo
zypper refresh
zypper install rubygem-growl