Created attachment 527228 [details] build.log The failure in the build log attached (from a prefix machine) but reproducible on numerous systems occurs if =sci-libs/scikits_learn-0.18.2-r1 is emerged without having =dev-python/numpy-1.13.3 available. This cannot be fixed simply by updating the deps of =sci-libs/scikits_learn-0.18.2-r1 since, being stable, it should not depend on unstable packages. Possible solutions are: * Stabilize =numpy-1.13.3 and update =scikits_learn-0.18.2-r1 deps * Remove stable status from =scikits_learn-0.18.2-r1 and update deps. This is awkward since =scikits_learn-0.19.0 is stable (though it has outstanding issues as well: https://bugs.gentoo.org/630294) I was able to confirm that this issue does not arise for numpy failing to report cblas accurately after cblas re-install or re-selection.
Created attachment 527230 [details] emerge --info
