Don't scare users who want to use -proposed

Thanks for the report. Is the current wording really that discouraging? It just warns user that proposed version didn't go through full testing yet and might create issue, which is a fair statement. No objection to change it if design comes with another text though...

The current text is quite confused. (“Proposed updates are only for testing updates”? No. They aren’t *for* testing updates, they *are* updates.) And its lack of wrapping single-handedly makes the whole window much wider than it should be. So there’s a lot of room for improvement.

However, it’s strange to acknowledge that “enabling proposed can make the system unstable” but then immediately to claim that we should “not discourage [people from] using it”. Of course we should discourage people from making their system unstable! If there was no reason to discourage -proposed, there would be no reason not to have it on by default, which would be tantamount to it not existing at all.

Now, there are subtler and cruder methods of discouragement. Putting it in a “Developer Options” tab is by itself a subtle discouragement: “I’m not a developer, maybe I should stay away”. My current design goes further, putting it in a “Contributor Console” that’s a separate utility altogether. <https://wiki.ubuntu.com/ContributorConsole#updates>

As long as that app remains unimplemented, I would use the same text as I specified there:
    Check for updates being tested (-proposed)
And replace the label above with a caption underneath, something like:
    Use proposed updates if you’re willing to report bugs on any problems that occur.

This bug was fixed in the package software-properties - 0.96.24.3

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software-properties (0.96.24.3) yakkety; urgency=medium

  * data/gtkbuilder/main.ui: tweak the wording for the enable proposed
    option as suggested on lp: #1604705, extra changes are described on the bug
    but that's more work so that's a first step in the direction

 -- Sebastien Bacher <email address hidden> Wed, 17 Aug 2016 11:34:26 +0200