On 04/18/2016 02:10 PM, Steve Langasek wrote:
> Hi Thomas,
> On Mon, Apr 18, 2016 at 02:00:43PM -0400, Thomas Ward wrote:
>> On 04/08/2016 12:39 PM, Steve Langasek wrote:
>>> Thanks to some stellar work by Dimitri Ledkov and Colin Watson, and as
>>> discussed on ubuntu-devel over the past couple of months[1,2], a change has
>>> been landed to Launchpad and the archive reports to allow packages in
>>> main to build-depend on universe (and packages in restricted to build-depend
>>> on either universe or multiverse).
>>> What this means for you:
>>> - If you are building packages locally, you will want to update your build
>>> environments for xenial and beyond to include universe in the apt
>>> sources, to mirror Launchpad's behavior.
>>> - If you are updating a package that carries a delta to its
>>> build-dependencies, you will want to check if this delta can now be
>>> dropped. If readding the build-dependency results in a new runtime
>>> dependency, the package will be blocked by proposed-migration in
>>> -proposed until component mismatches are resolved; you will then need
>>> to either re-add the delta, or follow the MIR process.
>> I think I need some clarification on this point. The way I interpret
>> this is as follows:
>> 1. We are able to build-depend packages in Main on Universe, such that
>> any Universe compile-time dependencies are no longer needed to be
>> dropped for a package to be in Main. But...
>> 2. If such build-dependencies then introduce new dependencies on the
>> built binaries, the runtime-dependency packages of which are
>> necessary in the built binaries must be in Main.
>> Is this an accurate interpretation of the points made in your email, or
>> am I misreading what you are stating?
> You've got it exactly.
There's one follow-up here: does this apply for all binaries produced by
the source package (regardless of Main/Universe), or does this apply for
only produced binaries which land in Main? (Thanks to Robie for making
a clarification point in private messages on IRC) There's a case where
this applies - nginx - with regards to nginx-core being a binary
produced in Main, but the other binaries (such as nginx-extras) being in
Universe, with a Wishlist bug asking for us to drop one of the
Main-inclusion deltas (which would only affect nginx-extras).
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