Only ebuild remaining in prefix tree is: bzr-2.1.0_beta4.ebuild which is masked by package mask with comment stating that all development versions are masked bzr-2.0.4 from gentoo main repository works for me on osx-64bit. Reproducible: Always
Mmm bzr-2.0.4 fails if you enable the doc useflag but that can be solved by replacing: distutils_src_install --install-data /usr/share with: distutils_src_install --install-data ${EPREFIX}/usr/share