build.snapcraft.io should honour target-architectures when that lands in snapcraft

[popey]

My yaml has:-
architectures: [amd64]
Because I know it fails to build on armhf, and I'm only testing on amd64, so pointless wasting cpu cycles on 40 min armhf builds.
I realise build is explicitly limited to amd64 and armhf (and currently not i386), but it would be nice if I could force not to build on armhf for example.

[flexiondotorg]

I am running into the same issue for a different use case. A snapcraft.yaml that ingests a tarball from CI and said tarball is amd64 only, but there are now builds in the store for armhf and amd64.

[evandandrea]

Also encountered here

[cjwatson]

Sadly this isn't what the architectures field means in snapcraft.yaml. Setting that field declares that you're building a single multi-architecture snap that works on that set of architectures: you get a *_multi.snap with that set of architectures in its meta/snap.yaml. That's not at all what's wanted here.

I agree that we should have the feature of being able to declare what architectures you want the snap to be built for, but it can't be done with the existing architectures field.

[evandandrea]

Sorry for the confusion. I just spoke with Sergio and Snapcraft will gain an option for specifying what architectures a snap should be built on:
https://lists.ubuntu.com/archives/snappy-app-devel/2016-April/000654.html

[evandandrea]

Another reason for letting the developer limit the target architectures in the snapcraft.yaml, anbox's build badge shows as "failing" because it's (seemingly) not intended to work on ARM.

[evandandrea]

@sergiusens, can you estimate when this might land in snapcraft?

[sergiusens]

Let me bring the mailing list post into the forums.

…

On Jun 5, 2017 10:39 AM, "Evan" ***@***.***> wrote: @sergiusens <https://github.com/sergiusens>, can you estimate when this might land in snapcraft? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#556 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABF_5dZkR9z9xxoWXZkfvLh682c2O9dUks5sBAUFgaJpZM4Mr-oA> .

[elopio]

For reference, this is the discussion in the forum:
https://forum.snapcraft.io/t/snapcraft-build-on-hint-for-builders/939

[matthewpaulthomas]

Looks like the current dependency is snapcraft#1681.