Created attachment 486620 [details] WINE 2.12 ebuild I'd like to suggest adding the development releases of WINE to the portage tree. The 2.3 (which I'm assuming is some intermediate update to stable) and -9999 ebuilds work well, but the devel releases are a nice predictable set of milestones. I've bumped the wine-2.3 ebuild to 2.12 in my own tree and it builds with all USE flags enabled without further modification - looks like the current ebuild abstracts things pretty nicely.
Sorry - minor correction - "${FILESDIR}"/${PN}-1.7.12-osmesa-check.patch #429386 does need to be removed.
Thanks for your work, however, this command might open your eyes: $ equery l -p wine*
...d'oh. :-)