* Re: [gentoo-dev] Subslots: should they be bumped like SONAME or on any ABI changes?
@ 2014-06-14 16:05 99% ` Ian Stakenvicius
0 siblings, 0 replies; 1+ results
From: Ian Stakenvicius @ 2014-06-14 16:05 UTC (permalink / raw
To: gentoo-dev
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On 14/06/14 10:41 AM, Michał Górny wrote:
> Hi,
>
> Some time ago we've got bug #510780 [1] asking us to bump subslot
> on LLVM even though the new version was ABI-compatible with
> previous one. It was because it introduced new APIs which
> applications could make use of. Since I believe this is a wider
> issue, I would like to know the opinion of our community about
> this.
>
> More specifically: do we want subslots to change only when
> backwards- incompatible ABI changes are done -- alike SONAME -- or
> whenever any ABI change is done? The problem seems a bit complex.
>
> Considering the libtool versioning, there are two kinds of library
> bumps relevant to us:
>
> 1) when ABI is altered in backwards-compatible way (so old stuff is
> not touched),
>
> 2) when ABI is altered in backwards-incompatible way.
>
I vote that as primary policy/general practice, it only be bumped for
(2) -- the primary purpose of subslot rebuilds is to allow portage to
figure out the deptree order when a dependency upgrade is going to
break a package that may or may not be emerged later. "break" is the
key term here. If users want to re-emerge the rdeps of a package on
upgrade they can certainly do so, but I don't see this as something we
want to force on everybody just because we can...
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2014-06-14 14:41 [gentoo-dev] Subslots: should they be bumped like SONAME or on any ABI changes? Michał Górny
2014-06-14 16:05 99% ` Ian Stakenvicius
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