Application.pm openSUSE improve zypper suggestion
As per https://community.kde.org/Get_Involved/development/Install_the_dependencies
"Note that the --plus-content option in the above commands means you don't need to have the source repository enabled all the time, --plus-content will make zypper temporarily enable it to get the info it needs.".
If the user has skipped the part of the kdesrc-build procedure
"Next, some distros need source repos enabled before you can install the development packages you need. Do that now, if needed: openSUSE Tumbleweed: sudo zypper mr -e $(zypper repos | awk '/source/{print $5}')"
then the command line:
'sudo zypper source-install --build-deps-only <source_package>'
fails.