Comment 5 for bug 1974244

content from https://paste.centos.org/view/raw/accad93c
tripleo-heat-templates on  bug/1974244 [$?] via ? v3.10.4 (oslo_log_repr) took 33s
❯ pip install -i https://mirror.gra1.ovh.opendev.org/pypi/simple,https://mirror.gra1.ovh.opendev.org/wheel/ubuntu-18.04-x86_64 -c https://opendev.org/openstack/requirements/raw/branch/master/upper-constraints.txt -r requirements.txt -r test-requirements.txt
Looking in indexes: https://mirror.gra1.ovh.opendev.org/pypi/simple,https://mirror.gra1.ovh.opendev.org/wheel/ubuntu-18.04-x86_64
ERROR: Cannot install pbr!=2.1.0 and >=2.0.0 because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested pbr!=2.1.0 and >=2.0.0
    The user requested (constraint) pbr===5.9.0

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