Why don't we just turn off MOZ_BLOCK_PROFILE_DOWNGRADE?

Geoff Lankow geoff at thunderbird.net
Tue Jul 2 03:16:20 UTC 2019

(That's the "You’ve launched an older version of Firefox" dialog.)

In bug 1535116 <https://bugzilla.mozilla.org/show_bug.cgi?id=1535116> 
we've proposed to change the text in the dialog to better suit 
Thunderbird. That's easy enough.

Magnus also wants me to change the "Create New Profile" to instead open 
the Profile Manager. That's not as easy as it sounds. The proper way to 
do it is through nsAppRunner.cpp. We're in a pre-startup state (although 
we do have XPCOM). Technically we /could/ show the Profile Manager 
window and mimic the expected results, but I'm not comfortable with that.

I digress. My point is: why do we have this thing at all? Is there a 
good reason we want to go to these lengths, other than Downgrading Is A 
Bad Idea™? It can be removed with a one line config change 


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