[c-c create] make post-create step optional (closes #2712041)
In this context the "post-create" step refers to the database's creation and
initialization. We want to be able to create a new instance but skip the
database creation (`db-create` and `db-init` commands) in automatic setup.
try:
rtype, = __args__
except ValueError:
print 'USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>'
print
graph = {}
for fromeid, toeid in rql('Any X,Y WHERE X %s Y' % rtype):
graph.setdefault(fromeid, []).append(toeid)
from logilab.common.graph import get_cycles
for cycle in get_cycles(graph):
print 'cycle', '->'.join(str(n) for n in cycle)