[Digikam-users] XMP sidecar tags to group images

[Jens Benecke]

Hello,

My iPhoto export project (at https://github.com/jensb/iphoto2xmp) is 
making progress nicely.
Since iPhoto always saves modifications as "versions" (mostly only a 
single version) I would like to keep this grouping in Digikam.

What tags do I need to write into an XMP sidecar file to preserve the 
grouping of images in Digikam?
Does Digikam support e.g. XMP derivedFrom and if so, what is the right 
syntax?

Alternatively, what SQL command(s) group(s) images when applied to the 
Digikam database?
This would be a hack but it would be better than nothing.

Thank you!

Regards
Jens