Uprade path from LTS releases

[Ben Collins]

On Tue, 2006-12-05 at 16:01 +0000, Roberto Piscitello wrote:
> I couldn't find any information in the wiki about upgrade paths from Dapper.
> 
> I know that to upgrade from release X to release X+2 you need to upgrade to X+1
> first.
> But Dapper is LTS, so I expect I'll be able to upgrade to the next LTS release
> (whenever it will come out) directly.
> 
> I think a logical plan to achieve this is to permit upgrades to a certain
> release (release X) from release X-1 *OR* the last LTS release.
> So, when Feisty is released, you can upgrade from Edgy, but also from Dapper.
> When Feisty+1 is released, you can upgrade from Feisty and from Dapper.
> And so on, untill a new LTS Ubuntu release.
> This way you get upgradability from LTS to LTS+1 releases for free.

I recall this being discussed, and I think the agreement was made to
just do LTS->NextLTS.

The idea of ensuring working upgrades for LTS->X+n up until the next LTS
was not a good idea because it would over-complicate things. It's a sure
bet that a lot of the upgrade machinery needed for LTS->X+n would not be
needed for the final LTS->NextLTS upgrade path.

Others probably have this better planned out, though. I'm just recalling
the initial discussion, and it was in no way set in stone.