Unable to install rpm packages created via "python setup.py bdist_rpm" due to python3 dependency

Issue

• How do I build a rpm in python3 environment using python3 from rhscl as it will requires python(abi) = 3.6 when rh-python36-python provides rh-python36-python(abi) = 3.6 ?

• Example with requests:

  • Download src code from pypi e.g. one of the most common one: https://pypi.org/simple/requests/
  • Make sure you have python 3 installed in your Red Hat environment:

  # yum install rh-python36-python.x86_64`)
  

  • Switch your current environment to python3:

  # scl enable rh-python36 bash
  # python -V
  Python 3.6.3
  

  • Build the rpm:

  cd requests-2.21.0/
  python setup.py bdist_rpm
  

  • Try to install the rpm:

   yum install dist/requests-2.21.0-1.noarch.rpm
  Loaded plugins: enabled_repos_upload, package_upload, product-id, search-disabled-repos, subscription-manager
  Examining dist/requests-2.21.0-1.noarch.rpm: requests-2.21.0-1.noarch
  Marking dist/requests-2.21.0-1.noarch.rpm to be installed
  Resolving Dependencies
  --> Running transaction check
  ---> Package requests.noarch 0:2.21.0-1 will be installed
  --> Processing Dependency: python(abi) = 3.6 for package: requests-2.21.0-1.noarch
  --> Finished Dependency Resolution
  Error: Package: requests-2.21.0-1.noarch (/requests-2.21.0-1.noarch)
             Requires: python(abi) = 3.6
             Installed: python-2.7.5-77.el7_6.x86_64 (@rhel-7-server-rpms)
                 python(abi) = 2.7
                 python(abi) = 2.7
             Available: python-2.7.5-16.el7.x86_64 (rhel-7-server-rpms)
  ...
  

  • The dependency can't be satisfied as python(abi) = 3.6 is not provided by any package.