Hi,

When I check pep8 with the newest devstack env by the cmd ‘tox ?Ce pep8’, it raise many packages conflict. The log is as follows.

root@song-ctrl:/opt/stack/cyborg# tox -e pep8

pep8 create: /opt/stack/cyborg/.tox/shared

pep8 installdeps: -chttps://releases.openstack.org/constraints/upper/master, -r/opt/stack/cyborg/requirements.txt, -r/opt/stack/cyborg/test-requirements.txt

ERROR: invocation failed (exit code 1), logfile: /opt/stack/cyborg/.tox/shared/log/pep8-1.log

========================================================================================================================================== log start ==========================================================================================================================================

Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple

Collecting pbr!=2.1.0,>=0.11 (from -r /opt/stack/cyborg/requirements.txt (line 5))

  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/01/06/4ab11bf70db5a60689fc521b636849c8593eb67a2c6bdf73a16c72d16a12/pbr-5.11.1-py2.py3-none-any.whl (112 kB)

Collecting pecan!=1.0.2,!=1.0.3,!=1.0.4,!=1.2,>=1.0.0 (from -r /opt/stack/cyborg/requirements.txt (line 6))

  Using cached pecan-1.4.2-py3-none-any.whl

Collecting WSME>=0.10.1 (from -r /opt/stack/cyborg/requirements.txt (line 7))

  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/d2/a0/54b71fd2e1ab4f838acf472726a14dadb6d1c77adc18d7e2c062dd955ff9/WSME-0.11.0-py3-none-any.whl (59 kB)

Collecting eventlet>=0.26.0 (from -r /opt/stack/cyborg/requirements.txt (line 8))

  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/90/97/928b89de2e23cc67136eccccf1c122adf74ffdb65bbf7d2964b937cedd4f/eventlet-0.33.3-py2.py3-none-any.whl (226 kB)

Collecting oslo.i18n>=1.5.0 (from -r /opt/stack/cyborg/requirements.txt (line 9))

  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/62/5a/ced9667f5a35d712734bf3449afad763283e31ea9a903137eb42df29d948/oslo.i18n-6.0.0-py3-none-any.whl (46 kB)

Collecting oslo.config!=4.3.0,!=4.4.0,>=1.1.0 (from -r /opt/stack/cyborg/requirements.txt (line 10))

  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/ce/15/97fb14b7a1692693610a8e00e2a08e4186d6cdd875b6ac24c912a429b665/oslo.config-9.1.1-py3-none-any.whl (128 kB)

Collecting oslo.log>=5.0.0 (from -r /opt/stack/cyborg/requirements.txt (line 11))

  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/9c/24/526545a76513c741c65eeb70a85c93287f10665147c7cff7e0eb24918d43/oslo.log-5.2.0-py3-none-any.whl (71 kB)

Collecting oslo.context>=2.9.0 (from -r /opt/stack/cyborg/requirements.txt (line 12))

  Using cached https://pypi.tuna.tsinghua.edu.cn/packages/7f/69/3a16785c49890cce2f7f14ee6525c76e7116f9dad44f122f5e3670e43970/oslo.context-5.1.1-py3-none-any.whl (20 kB)

ERROR: Cannot install oslo.messaging>=14.1.0 because these package versions have conflicting dependencies.

The conflict is caused by:

    The user requested oslo.messaging>=14.1.0

    The user requested (constraint) oslo-messaging===14.3.0

To fix this you could try to:

1. loosen the range of package versions you've specified

2. remove package versions to allow pip attempt to solve the dependency conflict

ERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

=========================================================================================================================================== log end ===========================================================================================================================================

ERROR: could not install deps [-chttps://releases.openstack.org/constraints/upper/master, -r/opt/stack/cyborg/requirements.txt, -r/opt/stack/cyborg/test-requirements.txt]; v = InvocationError('/opt/stack/cyborg/.tox/shared/bin/python -m pip install -chttps://releases.openstack.org/constraints/upper/master -r/opt/stack/cyborg/requirements.txt -r/opt/stack/cyborg/test-requirements.txt', 1)

___________________________________________________________________________________________________________________________________________ summary ___________________________________________________________________________________________________________________________________________

ERROR:   pep8: could not install deps [-chttps://releases.openstack.org/constraints/upper/master, -r/opt/stack/cyborg/requirements.txt, -r/opt/stack/cyborg/test-requirements.txt]; v = InvocationError('/opt/stack/cyborg/.tox/shared/bin/python -m pip install -chttps://releases.openstack.org/constraints/upper/master -r/opt/stack/cyborg/requirements.txt -r/opt/stack/cyborg/test-requirements.txt', 1)

I hope you can help us. Thank you very much.