Add AppStream metadata

[ijc]

https://www.freedesktop.org/software/appstream/docs/chap-Metadata.html

This was provided by Petter Reinholdtsen in https://bugs.debian.org/1076627 and has been included in the Debian packages for a couple of years. In that bug the usefulness is described as:

Including this information in the package will ensure programs mapping
hardware to packages using Appstream information, like the isenkram
package, will know that this package is useful on machines where the USB
IDs are discovered.

---

Unsure why I didn't forward this at the time...

[jameshilliard]

Is this something that only makes sense to install on Linux based systems? Should it be disabled on non-Linux?

[paulkocialkowski]

I don't have strong opinions about this. I honestly doubt that potential sunxi-tools users will need something like this to find out they can use it based on hardware detection. At the same time it is a FDO spec and it looks like we won't really need to update it unless we add a new binary so it probably doesn't hurt to include it.

[ijc]

Disclaimer: I know next to nothing about this AppStream stuff, I'm (belatedly) forwarding a patch which was supplied to me as the Debian package maintainer.

Is this something that only makes sense to install on Linux based systems? Should it be disabled on non-Linux?

AIUI FDO specs are generally cross platform, at least cross-Unix platform. I don't know if anything on e.g. the *BSD's exists which consumes this but I guess it's at least theoretically possible.

I don't have strong opinions about this. I honestly doubt that potential sunxi-tools users will need something like this to find out they can use it based on hardware detection.

FWIW the patch was supplied by one of the authors of Isenkram "Suggest packages to install when inserting new hardware (GUI popup)". I think possibly things like the GNOME and KDE software centers might also support it?

But in general I share your doubt, but also:

At the same time it is a FDO spec and it looks like we won't really need to update it unless we add a new binary so it probably doesn't hurt to include it.

Seems about right to me.

I'm not really sure that the list of the binaries is the most important bit, once there is a match on the USB device (the <modalias>) the whole package would generally be installed. So if the list gets a bit out of date 🤷 ...

[jameshilliard]

AIUI FDO specs are generally cross platform, at least cross-Unix platform. I don't know if anything on e.g. the *BSD's exists which consumes this but I guess it's at least theoretically possible.

I guess probably no harm adding it since it's a separate install target.

[apritzel]

I don't mind having that, if it helps some people, then why not, doesn't seem to hurt. Just would be good to have someone with experience to have a look at the XML file. If no one shows up within a few days, I would just merge it anyway - since it seems to make @ijc's life easier ;-)

[paulkocialkowski]

I don't mind having that, if it helps some people, then why not, doesn't seem to hurt. Just would be good to have someone with experience to have a look at the XML file. If no one shows up within a few days, I would just merge it anyway - since it seems to make @ijc's life easier ;-)

Sounds like a plan!

[apritzel]

I have no real clue about AppStream, but found those issues when skimming over the XML file.

[apritzel]

Many thanks @ijc for the changes, looks good now.
Verified with appstreamcli validate to pass the test.