document format of EXTRA_PPAS a bit

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Michael Hudson-Doyle 2025-12-09 12:00:55 +13:00
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@ -221,6 +221,12 @@ EXTRA_PPAS
Extra archives to get packages from.
This is a space separated list by the time it gets to
livecd-rootfs. Each element of the list is of the form USER/NAME[:PIN]
where user is a Launchpad user/team name, NAME is the name of the ppa
to add and the optional colon-PIN at the end is the value to pin (in
the "man 5 apt_preferences: sense) packages from this PPA at.
Production builds shouldn't really use this but it's definitely useful
for development.