I am looking for a GUI way to select one image file and print it multiple times on a single sheet of paper. This is basic functionality in other OS's, but my best shot for doing this in Ubuntu so far is this question: How to print multiple copies of an image on a single page
While that question got answers, they all seem to require either to use command-line, the will to workaround, or both. For many Ubuntu users that might be OK or a slight inconvenience (I find it quite annoying), but it's a no-go for many new users and discouraging for people considering to try out FLOSS.
Since other N-Up functionality, like printing a multi-page document with two or more pages per sheet of paper, works easily from most programs it would seem it should be trivial to achieve it for a single file. However, bugs like this one on Launchpad indicate difficulties…
So where does the problem actually live? Is this feature missing from CUPS, or is it a problem of the various programs? Neither gThumb, Shotwell, Okular, Ristretto nor any of the other programs I tried does this in a simple, straightforward manner.
How can this functionality be added to the system print dialog?