Even if the deb-src line was included automatically yet disabled if one adds a PPA through software-properties-gtk, I think your average user would get confused by the extra entries.
Making deb-src addition a command line flag or toggle for add-apt-repository would be a good compromise.
Even if the deb-src line was included automatically yet disabled if one adds a PPA through software- properties- gtk, I think your average user would get confused by the extra entries.
Making deb-src addition a command line flag or toggle for add-apt-repository would be a good compromise.