I added this to my ebuild: >=kde-base/libkholidays-${PV}:${SLOT} Then kalarm would compile/link. Reproducible: Always Steps to Reproduce: 1. Clear out kde 4.2 2. Install @kdebase-4.2 3. Try to emerge kalarm-4.1.72
Apparently, I missed this being fixed in 4.1.73. Nevermind.