It looks like paperwork has an invalid dependency on pycrypto, as it's only used in Windows to check activation keys: https://gitlab.gnome.org/World/OpenPaperwork/paperwork/commit/72eb88a8231a42fe3fab74f404a8ea5f41720d81 Can you please drop it?
Also, the repository has changed to gitlab.gnome.org/World/OpenPaperwork
commit 616d9f9a47c4eed744924823eea647ab8476c7e5 (HEAD -> master, origin/master, origin/HEAD) Author: Manuel Rüger <mrueg@gentoo.org> Date: Thu Jul 26 15:41:45 2018 +0200 app-text/paperwork: Drop dependency on pycrypto, update Homepage Package-Manager: Portage-2.3.43, Repoman-2.3.10