Narrowing it down, the dependency spyder3 has on python3-spyderlib is a hard one for a specific version shown here: http://packages.ubuntu.com/utopic/spyder3
Due to the packaging and the use of a PPA for testing, the backportpackage script breaks it by giving it a technically lower version number than the hard dependency that is built in.
Narrowing it down, the dependency spyder3 has on python3-spyderlib is a hard one for a specific version shown here: http:// packages. ubuntu. com/utopic/ spyder3
Due to the packaging and the use of a PPA for testing, the backportpackage script breaks it by giving it a technically lower version number than the hard dependency that is built in.