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Upstream has split development of the major versions 2 and 3. This package will keep tracking the latest version. If you prefer version 2, there is now a separate package gns3-gui-2.

Should be fixed now. I have relaxed the requirements to allow python-psutil from the community repo. I hope that is sufficient, else I could add another AUR package for that exact version.

I got the same error as everyone else :/ but that is probably more of a gns3-server package thing.

When I switch to remote server (just my GNS3 VM) gns3-gui works.

However selecting Virtualbox in GNS3 VM -> VM name "Refresh" does not.

Error using gns3-server 2.2.3-1 and gns3-gui 2.2.3-1. Thanks.

Traceback (most recent call last):
  File "/usr/bin/gns3", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python3.8/site-packages/pkg_resources/init.py", line 3251, in <module>
    def _initialize_master_working_set():
  File "/usr/lib/python3.8/site-packages/pkg_resources/init.py", line 3234, in _call_aside
    f(args, *kwargs)
  File "/usr/lib/python3.8/site-packages/pkg_resources/init.py", line 3263, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3.8/site-packages/pkg_resources/init.py", line 583, in _build_master
    ws.require(requires)
  File "/usr/lib/python3.8/site-packages/pkg_resources/init.py", line 900, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3.8/site-packages/pkg_resources/init.py", line 786, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'gns3-gui==2.2.3' distribution was not found and is required by the application

When starting gns3-gui 2.2.3, I see this on the console

pkg_resources.ContextualVersionConflict: (psutil 5.6.5 (/usr/lib/python3.8/site-packages), Requirement.parse('psutil==5.6.3'), {'gns3-gui'})

Hi I'am having error after installing gns-gui 2.2.3 & gns-server 2.2.3. Working again after downgrading to gns3-server-2.2.2-1 and gns3-gui-2.2.2-1. Thanks.

 ┌─ fyodor at 23:46  ın  {~}
 └─> ₹ » gns3
2019-11-13 23:46:47 INFO root:126 Log level: INFO
2019-11-13 23:46:47 INFO main:256 GNS3 GUI version 2.2.3
2019-11-13 23:46:47 INFO main:257 Copyright (c) 2007-2019 GNS3 Technologies Inc.
2019-11-13 23:46:47 INFO main:259 Application started with /usr/bin/gns3
2019-11-13 23:46:52 ERROR local_server:496 Local server process has stopped
2019-11-13 23:46:52 ERROR local_server:498 Traceback (most recent call last):
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 583, in _build_master
    ws.require(__requires__)
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 900, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 791, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (yarl 1.2.6 (/usr/lib/python3.7/site-packages), Requirement.parse('yarl==1.3.0'), {'gns3-server'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/gns3server", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3250, in <module>
    @_call_aside
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3234, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3263, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 585, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 598, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 786, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'yarl==1.3.0' distribution was not found and is required by gns3-server

2019-11-13 23:47:17 CRITICAL utils.progress_dialog:181 WaitForConnectionWorker thread stopping with an error: Could not connect to 127.0.0.1 on port 3080: [Errno 111] Connection refused
2019-11-13 23:47:18 CRITICAL progress_dialog.py:183 Could not connect to 127.0.0.1 on port 3080: [Errno 111] Connection refused

tototony: Which aiohttp/attrs issue?

to fix the aiohttp/attrs issue

pacman -S python-pip
pip install aiohttp

Fixed – sorry for the delay, I am currently on vacation.

I'm also experiencing issue with gns3 after the 20191001 update similar to phy0d0r