[pkg] require python >= 3.4
This avoid pip pulling a version that does not run on python2 when using a
python2 environment.
Since we already released some 3.27 releases in pypi, I think we should release
3.27.3 and remove releases 3.27.2, 3.27.1 and 3.27.0 from pypi.
from os import unlink
from os.path import isfile, join
from cubicweb.cwconfig import CubicWebConfiguration as cwcfg
regdir = cwcfg.instances_dir()
if isfile(join(regdir, 'startorder')):
if confirm('The startorder file is not used anymore in Cubicweb 3.22. '
'Should I delete it?',
shell=False, pdb=False):
unlink(join(regdir, 'startorder'))