gx86 bumped dev-python/mako to 0.3.2 and the prefix keywords came with it. Also added was an RDEPEND on dev-python/beaker, which has not been added to the Prefix tree. I managed to emerge dev-python/beaker-1.5.3 on ~x86-linux, ~amd64-linux and ~x64-macos simply by copying and keywording the ebuild from the gx86 tree. Reproducible: Always
thanks for testing and reporting.