[libvirt] [jenkins-ci PATCH] Switch libvirt-dbus builds to Meson

[Andrea Bolognani]

On Mon, 2019-09-23 at 13:23 +0200, Fabiano Fidêncio wrote:
>      name: libvirt-dbus
> +    # libvirt-dbus depends on meson 0.49.0 which is not available on
> +    # CentOS 7, Debian 9, Ubuntu 18;
>      machines:
> -      - libvirt-centos-7
> -      - libvirt-debian-9
>        - libvirt-debian-10
>        - libvirt-debian-sid
>        - libvirt-fedora-29
> @@ -12,42 +12,15 @@
>        - libvirt-freebsd-11
>        - libvirt-freebsd-12
>        - libvirt-freebsd-current
> -      - libvirt-ubuntu-16
> -      - libvirt-ubuntu-18

Based on the discussion we had on libvir-list, our approach for CI
should not be to drop target platforms on the basis that they doen't
include a recent enough Meson, but rather to make a suitable Meson
version available through other means such as pip.

I would even go as far as arguing that implementing such a solution
in libvirt-jenkins-ci is a pre-requisite, if not for merging the
libvirt-dbus patches making the switch to Meson, certainly for
cutting a release that includes them.

The general understanding is that we only test what we claim to
support and only claim to support what we test. There are some cases
where we're not following this mantra to the letter, and efforts are
already underway to address the most obvious ones, but that's no
excuse to make the situation worse, especially considering that in
the coming months we expect to move more and more projects to Meson.

As a positive side-effect of figuring this out, we should be able to
start building osinfo-db-tools again on platforms such as Ubuntu
18.04, dropping which I already though was problematic at the time.

tl;dr NACK until we figure out how to do this without dropping
      several target platforms in the process

-- 
Andrea Bolognani / Red Hat / Virtualization