The current stable version of Specimen depends on media-libs/phat-0.4.0. The Specimen ebuild needs to check the installed version of libphat (the stable version is 0.2.0). Reproducible: Always Steps to Reproduce: 1. make sure the installed version of libphat is 0.2.0 2. emerge specimen. Actual Results: Failed emerge - complaints about undefined variables. There is another outstanding bug in specimen itself which has been addressed by a patch.
Fixed in 0.5.2_rc3