1

Software repositories in Ubuntu are divided into four categories or components - main, restricted, universe and multiverse, according to support offered by Ubuntu and free and open source: how well it meets the goals of Ubuntu's free software philosophy.

In my source file, I saw that all the ppa's belong to main, e.g.:

deb http://ppa.launchpad.net/kalakris/okular/ubuntu precise main
deb-src http://ppa.launchpad.net/kalakris/okular/ubuntu precise main

While both being free and open source, Main is officially supported by the Ubuntu security and distribution team. and Universe is community maintained, but not officially supported.

Shouldn't a ppa belong to Universe instead of Main?

2

PPAs do not belong to the main Ubuntu archive, no. However, PPAs only have a main archive, as they are not part of the Ubuntu archive itself. They do not have universe or multiverse. Nothing in a PPA is supported by officially supported Ubuntu, generally speaking.

However, the Launchpad Terms of Service also prohibit you from uploading any proprietary binary software to a PPA. You can only upload debian source packages to a PPA. And you can only have private PPAs or PPAs with proprietary software, if you are paying for a Commercial subscription that enables you to host proprietary projects on Launchpad.

  • What does "main" mean for PPAs? – Tim Jul 11 '14 at 14:46
  • It doesn't mean anything special. – dobey Jul 11 '14 at 15:05

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