Tested the new proposed package for Trusty (-0ubuntu2.5) now and automatic driver package installation is working now, so the workaround of using python-requests instead of pycurl to retrieve data from OpenPrinting solves the problem.
Tested the new proposed package for Trusty (-0ubuntu2.5) now and automatic driver package installation is working now, so the workaround of using python-requests instead of pycurl to retrieve data from OpenPrinting solves the problem.