Following up on pre-packaging of current czmq, want version 3 too

[jimklimov]

Due to legacy reasons and API changes, some projects rely on czmq v3.0.2 and did not migrate to newer foundation yet. Recently good progress to speed up CI builds was made by pre-packaging some of the zeromq ecosystem components, but it seems "libczmq3-dev" is not among these. @bluca : Would it be possible to provide (packaged head of branch "v3.0.2") it with the same mechanism?

On a side note, maybe it makes sense to define a zproject known-project like "czmq3" with its customized version, release and package name values, which project.xml consumers could <use>.

[bluca]

libczmq3 was in Debian testing for a while so you can rebuild it in your OBS instance as a source artefact if you need it, simply add a _service with this content:

<services>
  <service name="download_url">
    <param name="host">snapshot.debian.org</param>
    <param name="protocol">http</param>
    <param name="path">/archive/debian/20150816T153634Z/pool/main/c/czmq/czmq_3.0.2.orig.tar.gz</param>
  </service>
  <service name="download_url">
    <param name="host">snapshot.debian.org</param>
    <param name="protocol">http</param>
    <param name="path">/archive/debian/20160902T164952Z/pool/main/c/czmq/czmq_3.0.2-10.dsc</param>
  </service>
  <service name="download_url">
    <param name="host">snapshot.debian.org</param>
    <param name="protocol">http</param>
    <param name="path">/archive/debian/20160902T164952Z/pool/main/c/czmq/czmq_3.0.2-10.debian.tar.xz</param>
  </service>
</services>

In general though, there is no 3.x branch, intentionally, following the C4 model, we are not going to maintain it. The API deprecation was announced 2 years ago after all, so we want everyone to move to 4.x. This is why I intentionally did not provide a versioned -dev package in Debian, and I upgraded all my internal projects to the new APIs

I don't think we should provide this in the zeromq OBS project as this might lead users to believe that 3.x is still maintained, when in fact it's not and it will not get any bugfix anymore

[bluca]

To make things easier to maintain in your OBS instance, you can configure your poject to link to zeromq:git-stable. This means OBS will automatically rebuild packages that depend on czmq, and take the rest as they are from zeromq's project. Something like this:

<project name="home:foo:bar">
  <link project="home:zeromq:git-stable"/>
  <repository name="Debian_8.0" linkedbuild="localdep">
    <path project="openSUSE:Tools" repository="Debian_8.0"/>
    <arch>i586</arch>
    <arch>x86_64</arch>
  </repository>
</project>

Note the "link" element and "linkedbuild" attribute. You can add these to an existing project.

Then create in that project a "czmq" package with the _service as described in the previous reply. This will build czmq3 and automatically rebuild zyre and malamute, and pick the other binaries as they are in zeromq:git-stable.

You can also do this in your private OBS instance, if you set up an interconnect to OpenSUSE's instance (which I'm pretty sure you have), then just prefix the interconnect name to home:zeromq:git-stable.

OBS is pretty amazing :-)

[stale]

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