As stated in the summary, here's an ebuild for the current version 1.7.1
Created attachment 13103 [details] proposed ebuild for XDrawChem 1.7.1
Created attachment 13105 [details] Digest for ebuild XDrawChem 1.7.1
If you think that xdrawchem needs a version bump, that's nice and helpful. But why do you talk of a "new ebuild" and attach one when it is (except the hand-edited header line) exactly the same as the 1.6.8 already in portage? Just saying "hey, there's a new version and the old ebuild works" is less work for you and less for us. Thanks for the hint!
Seems to run. Putting into portage.