* gnu/packages/virtualization.scm (criu)[arguments]: Set PYTHON
in #:make-flags instead of ‘hard-coding’ it later. Replace the
forever-broken 'wrap phase with one that doesn't attempt to support
‘--with-input’ for now.
[inputs]: Substitute python and python-protobuf for python-2 and
python2-protobuf, respectively, and remove python2-ipaddr.