This is a debconf bug, amazingly enough:
debconf (developer): <-- METAGET localechooser/continentlist Choices-en.UTF-8 debconf (developer): --> 1
debconf should fall back to Choices here, but doesn't.
This is a debconf bug, amazingly enough:
debconf (developer): <-- METAGET localechooser/ continentlist Choices-en.UTF-8
debconf (developer): --> 1
debconf should fall back to Choices here, but doesn't.