ERROR: ipapython 4.5.0 requires pyldap>=2.4.15, which is not installed.
ERROR: requests 2.22.0 has requirement idna<2.9,>=2.5, but you’ll have idna 2.4 which is incompatible.
ERROR: ipapython 4.5.0 has requirement dnspython>=1.15, but you’ll have dnspython 1.12.0 which is incompatible.
Installing collected packages: netaddr, pbr, urllib3, certifi, chardet, requests, hvac, jmespath, ruamel.ordereddict, ruamel.yaml
Found existing installation: netaddr 0.7.5
ERROR: Cannot uninstall ‘netaddr’. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.
- Initiating Environment
*********************************************
ERROR! Unexpected Exception, this is probably a bug: name ‘platform_system’ is not defined

遇到这个问题, 不知道怎么处理。