previously valid amazon environment now invalid?

[Nate Finch]

No one seems to be answering my actual question. That error message seems
new. Is it?  Either way, the error message is incorrect - control bucket is
not required - and whatever is emitting that message needs to be fixed.
On Apr 28, 2015 2:32 PM, "Aaron Bentley" <aaron.bentley at canonical.com>
wrote:

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> On 2015-04-28 11:42 AM, roger peppe wrote:
> > The .jenv code was introduced prior to 1.16. How far back in time
> > do we need to preserve compatibility? (genuine question)
>
> We need to support every mode of operation that 1.18 supported.  Juju
> has a special exemption that allows minor releases, rather than
> micro/bugfix releases, to added to Ubuntu.  But in order to use that
> exemption, new versions of Juju are supposed to be equivalent to a
> micro/bugfix release in terms of their compatibility.
>
> We had our own IS people upgrade to juju 1.20 from 1.18 and find that
> juju no longer worked.  That's terrible.
>
> > If transitioning to the new scheme is really an issue, it would be
> > easy to write a very simple tool that would allow a .jenv file to
> > be created from an existing environments.yaml entry.
>
> No, that's not the issue.  We have workarounds.  It's not supposed to
> break in the first place.
>
> > Or is the issue perhaps not just one of backward compatibility,
> > but that people are actually relying on this (ostensibly
> > only-for-compatibility) functionality even for environments
> > bootstrapped since 1.16?
>
> I don't know what "ostensibly only-for-compatibility" means.  Yes we
> need to be compatible, and yes we need to stay compatible.
>
> Juju needs to be compatible with 1.18.  As William Reade said, "Thou
> Shalt Not Break Compatibility With 1.18. We Are Stuck With It."
>
> https://lists.ubuntu.com/archives/juju-dev/2014-July/003073.html
>
> Aaron
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