$ docker run --rm -ti xrootd/xrootd:issue-1594
[root@9cc1f196bef4 /]# . /opt/rh/devtoolset-7/enable
[root@9cc1f196bef4 /]# python3 -m venv issue-1641
[root@9cc1f196bef4 /]# . issue-1641/bin/activate
(issue-1641) [root@9cc1f196bef4 /]# python -m pip --quiet install --upgrade pip setuptools wheel   
Cache entry deserialization failed, entry ignored
(issue-1641) [root@9cc1f196bef4 /]# python -m pip --quiet install --upgrade build
(issue-1641) [root@9cc1f196bef4 /]# cd xrootd/
(issue-1641) [root@9cc1f196bef4 xrootd]# cp packaging/wheel/* .
(issue-1641) [root@9cc1f196bef4 xrootd]# python -m build --sdist .
...
Successfully built xrootd-unknown.tar.gz
(issue-1641) [root@9cc1f196bef4 xrootd]# python -m pip install --upgrade dist/xrootd-unknown.tar.gz 
Processing ./dist/xrootd-unknown.tar.gz
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: xrootd
  Building wheel for xrootd (setup.py) ... done
  WARNING: Legacy build of wheel for 'xrootd' created no files.
  Command arguments: /issue-1641/bin/python -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-req-build-m80_htkl/setup.py'"'"'; __file__='"'"'/tmp/pip-req-build-m80_htkl/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-9yheewvo
  Command output: [use --verbose to show]
  Running setup.py clean for xrootd
Failed to build xrootd
Installing collected packages: xrootd
    Running setup.py install for xrootd ... done
Successfully installed xrootd-5.4.2
(issue-1641) [root@9cc1f196bef4 xrootd]# python -m pip show xrootd
WARNING: No metadata found in /issue-1641/lib/python3.6/site-packages
WARNING: No metadata found in /issue-1641/lib/python3.6/site-packages
WARNING: No metadata found in /issue-1641/lib/python3.6/site-packages
Name: xrootd
Version: 5.4.2
Summary: 
Home-page: 
Author: 
Author-email: 
License: 
Location: /issue-1641/lib/python3.6/site-packages
Requires: 
Required-by: 

(issue-1641) [root@9cc1f196bef4 xrootd]# deactivate
[root@9cc1f196bef4 xrootd]# python3 -m pip --quiet install --upgrade pip setuptools wheel
[root@9cc1f196bef4 xrootd]# python3 -m pip install --upgrade --user dist/xrootd-unknown.tar.gz
Processing ./dist/xrootd-unknown.tar.gz
  Preparing metadata (setup.py) ... done
Building wheels for collected packages: xrootd
  Building wheel for xrootd (setup.py) ... done
  WARNING: Legacy build of wheel for 'xrootd' created no files.
  Command arguments: /usr/bin/python3 -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-req-build-3ajy3hoe/setup.py'"'"'; __file__='"'"'/tmp/pip-req-build-3ajy3hoe/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-44hqsp87
  Command output: [use --verbose to show]
  Running setup.py clean for xrootd
Failed to build xrootd
Installing collected packages: xrootd
    Running setup.py install for xrootd ... done
Successfully installed xrootd-5.4.2
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv
[root@9cc1f196bef4 xrootd]# python3 -m pip show xrootd
WARNING: No metadata found in /root/.local/lib/python3.6/site-packages
WARNING: No metadata found in /root/.local/lib/python3.6/site-packages
WARNING: No metadata found in /root/.local/lib/python3.6/site-packages
Name: xrootd
Version: 5.4.2
Summary: 
Home-page: 
Author: 
Author-email: 
License: 
Location: /root/.local/lib/python3.6/site-packages
Requires: 
Required-by: