cryptorekt [1] filed a deletion request for gns3-gui [2]: Hello, Please update the "python-jsonschema" package requirement. It asks for version 3.2. Also, "python-sip" seems to be a problem but it can be fixed by installing "python-sip4". Thanks.
[1] https://aur.archlinux.org/account/cryptorekt/ [2] https://aur.archlinux.org/pkgbase/gns3-gui/
