Created attachment 64389 [details] [review]
patch to build against CUPS 1.6
CUPS 1.6 has been planned to be out this summer.
There's however one feature  that prevents
cups-pk-helper from building against it.
I'm attaching a patch that fixes it for me
(tested with CUPS-1.6rc1).
Thanks for the patch, and sorry for the slow response. I'll review it this week. But a quick glance tells me it's probably good to merge.
Thanks, pushed. I'll do a release soon, but I have some bug to fix first.