Created attachment 646630 [details] Build log See the attached build log. The errors are of this kind: skimage/segmentation/_slic.c:21459:13: error: ‘PyThreadState’ {aka ‘struct _ts’} has no member named ‘exc_traceback’; did you mean ‘curexc_traceback’?
Created attachment 646632 [details] emerge --info
I have the same issue. It is commented here: https://github.com/scikit-learn/scikit-learn/issues/11320 They recommend to use 0.20.2: https://github.com/scikit-learn/scikit-learn/issues/11320#issuecomment-405977846 but my portage is trying to install sci-libs/scikits_image-0.13.0-r1 ...and there is no alternative in the portage tree.
Sorry for the wrong links in my post above. Anyway using a new version of scikit-image apparently fixes the issue
Created attachment 647294 [details] ebuild for version 0.17.2 It fixes the issue in my system
fixed, the new version fo scikit-image is in the tree and builds fine. https://gitweb.gentoo.org/repo/gentoo.git/tree/sci-libs/scikit-image/scikit-image-0.17.2.ebuild