[OE-core] what exactly does the "meta-systemd" layer do?

[Andreas Müller]

On Thu, Dec 8, 2016 at 11:11 AM, Robert P. J. Day <rpjday at crashcourse.ca> wrote:
>
>   almost certainly a dumb question, but what is the purpose of the
> meta-openembedded/meta-systemd layer? i can see that the general
> structure of that layer is a pile of bbappend files of the form:
>
>   RPROVIDES_${PN} += "${PN}-systemd"
>   RREPLACES_${PN} += "${PN}-systemd"
>   RCONFLICTS_${PN} += "${PN}-systemd"
>
> so, in the case of, say, dropbear (which, from oe-core, is already a
> systemd-controlled activity), i see a simple renaming of the package
> produced. so instead of "dropbear", i'll get "dropbear-systemd".
>
>   what am i missing? what is the purpose of that layer?
>
> rday
>
The initial systemd support was implemented in meta-systemd and later
moved to oe-core. In the first implementation service files were
packed in extra packages named ${PN}-systemd. This was undone when
moving to oe-core. I think today meta-systemd is only there to keep
package feeds happy.

Andreas