dev-python/xapp should runtime depend on dev-python/psutil https://github.com/linuxmint/python-xapp/blob/master/xapp/os.py#L4
Thanks, commit c31388ea5c943f541131566d7c4454607d9b4c31 (HEAD -> master, origin/master, origin/HEAD) Author: Kristian Fiskerstrand <k_f@gentoo.org> Date: Sat Jul 1 13:26:01 2017 +0200 dev-python/xapp: Add psutil RDEP Gentoo-Bug: 622908 Package-Manager: Portage-2.3.6, Repoman-2.3.1