Whilst the correct variables are set at the top of the ebuild, there's a sed to change the install.rdf lower down that hasn't been updated from beta 1. the line should read: sed -i -e "s/2\.0a1/2.0b2/" ${D}${MOZILLA_FIVE_HOME}/extensions/${emid}/install.rdf I'll attach a patch in a minute...
Created attachment 112948 [details, diff] Patch for the ebuild to go from 2b1 to 2b2 I also fixed the thunderbird patch version in here. I'm still a little shy about altering other herds' ebuilds, hence the bug report/patch. Sorry if this isn't the best way of fixing the problem...
Fixed, thanks.