Cannot set temp queue as default destination if there is no permanent queue installed

[zdohnal]

CUPS 2.4.7, Fedora 38

$ lpstat -a
$ lpstat -e
test_linux
$ lpoptions -d test_linux
device-uri=ipps://test%20%40%20linux._ipps._tcp.local/cups printer-info='test @ linux' printer-make-and-model='PostScript Printer' printer-type=25178190
$ lpstat -d
no system default destination

It happens because because we use _cupsGetDests() in cupsSetDests2() for getting printers, but IPP_OP_GET_PRINTERS returns only permanent queues, thus cupsSetDests2() ends because it hits IPP_ERROR_NOT_FOUND.
I'm on the way with fix - I was able to set the default destination when I use cupsGetDests2() instead of _cupsGetDests(), but I was not able to remove the settings with lpoptions -x test_linux - I will look into it further.

[michaelrsweet]

This is likely a timing issue, but I'd be interested in seeing what "lpstat -p" shows after running the lpoptions command. IPP_OP_CUPS_GET_PRINTERS (CUPS-Get-Printers) returns temporary queues that have been created with CUPS-Create-Local-Printer but haven't "expired"...

[michaelrsweet]

@zdohnal Ping, just trying to close the loop on this...