These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild  N    ] sys-apps/lm_sensors-2.10.4  USE="-sensord" 0 kB 
[ebuild  N    ] dev-python/PyQt-3.17  USE="-debug -doc -examples" 0 kB 
[ebuild  N    ] media-gfx/xv-3.10a-r14  USE="jpeg png tiff" 3,539 kB 
[ebuild  N    ] net-analyzer/net-snmp-5.4.1-r1  USE="X ipv6 lm_sensors perl python ssl tcpd -diskio -doc -elf -mfd-rewrites -minimal -rpm (-selinux) -sendmail -smux" 5,003 kB 
[ebuild  N    ] dev-python/imaging-1.1.5  USE="X -doc -scanner -tk" 420 kB 
[ebuild  N    ] dev-python/reportlab-2.0  2,356 kB 
[ebuild  N    ] net-print/hplip-2.7.9-r1  USE="X fax parport ppds scanner snmp -doc -minimal" 14,150 kB 

Total: 7 packages (7 new), Size of downloads: 25,465 kB