As far as I know, there is no notion of a stable Layer or a stable
Interface.  That makes it difficult to carry any layered charm as "stable,"
and quite awkward to cherry-pick and backport fixes to stable charms which
depend on Layers and Interfaces.

As you mention, you could synthesize stability (or point-in-time) by
branching, forking repos, but I think Layers and Interfaces should
ultimately grow proper versioning semantics.

Cheers,

Ryan


On Thu, Nov 3, 2016 at 4:31 AM, Konstantinos Tsakalozos <
kos.tsakalo...@canonical.com> wrote:

> Hi everyone,
>
> This is probably a question on best practises.
>
> A reasonable ask for a build process is to be able to reproduce the same
> output artifacts from a certain point in time. For example, I would like to
> be able to rebuild the same charm I build 10 minutes, or a week or a month
> ago. I can think of a way to do that but it involves forking the layers
> used and getting them locally before charm build. Is there a better way?
> What would you do to accommodate this requirement?
>
> Thanks,
> Konstantinos
>
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