gns3server --shell not working.

[superwolfboy]

2.2.0a2
gns3vm

run gns3server --shell it said
Unable to start a shell: the ptpython module must be installed!
so I run pip3 install ptpython and finished.
run gns3server again and received the follow message

Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 574, in _build_master
ws.require(requires)
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 892, in require
needed = self.resolve(parse_requirements(requirements))
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 783, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (prompt-toolkit 2.0.9 (/usr/local/lib/python3.6/dist-packages), Requirement.parse('prompt-toolkit==1.0.15'), {'gns3-server'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/bin/gns3server", line 6, in
from pkg_resources import load_entry_point
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 3088, in
@_call_aside
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 3072, in _call_aside
f(*args, **kwargs)
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 3101, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 576, in _build_master
return cls._build_from_requirements(requires)
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 589, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/usr/lib/python3/dist-packages/pkg_resources/init.py", line 778, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'prompt-toolkit==1.0.15' distribution was not found and is required by gns3-server

After this , I reinstall gns3server by running pip3 install gns3-server==2.2.0a2
and run gns3server working , but gns3server --shell still receive the ptpython module must be installed message.

[grossmj]

Indeed, this is broken. However, why do you need this? (since this is for debugging purpose only).

This will require us to fix #1424 first.

[superwolfboy]

Indeed, this is broken. However, why do you need this? (since this is for debugging purpose only).

This will require us to fix #1424 first.

Cause I notice the gns3server ignored option "iourc_path" in gns3_server.conf which i mentioned in issues #1555
So I want to know more details about this just like wether my configuration problem or this feather has been removed or bug.
So I want use this shell to try get some information.

[grossmj]

I am gonna look at #1555 soon.

[superwolfboy]

I am gonna look at #1555 soon.

Thank you very much.
By the way , my slack account (firexjn@gmail.com) ended now I found today ,and if it is possible ,may I join again?