Build.log attached Reproducible: Always
Created attachment 262787 [details] build.log
I noticed from the build logs that you are using python 2.6. This may be related to bug #399277. There I had to switch the allowed ABIs to exclude 2.6 to get it to compile.
+*nevow-0.11.1-r1 (11 Jul 2015) + + 11 Jul 2015; Patrice Clement <monsieurp@gentoo.org> +nevow-0.11.1-r1.ebuild: + Remove failing test. Fix bug 355237. +