Description of problem:
# dnf list dnf
Traceback (most recent call last):
  File "/usr/bin/dnf", line 57, in <module>
    from dnf.cli import main
  File "/usr/lib/python3.6/site-packages/dnf/__init__.py", line 31, in <module>
    import dnf.base
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 28, in <module>
    from dnf.module.persistor import ModulePersistor
ModuleNotFoundError: No module named 'dnf.module'

If you try to distro-sync upgrade to it the error you get is identical to the above and if I try to use dnf to upgrade itself from the version in boltron I get:


Traceback (most recent call last):
  File "/usr/bin/dnf", line 58, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 179, in user_main
    errcode = main(args)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 64, in main
    return _main(base, args, cli_class, option_parser_class)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 99, in _main
    return cli_run(cli, base)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 123, in cli_run
    ret = resolving(cli, base)
  File "/usr/lib/python3.6/site-packages/dnf/cli/main.py", line 154, in resolving
    base.do_transaction(display=displays)
  File "/usr/lib/python3.6/site-packages/dnf/cli/cli.py", line 237, in do_transaction
    display = [display]
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 739, in do_transaction
    self._trans_error_summary(errstring))
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 879, in _run_transaction
    else:
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 931, in _verify_transaction
    count = 0
  File "/usr/lib/python3.6/site-packages/dnf/base.py", line 905, in display_banner
    propagate external yumdb information.  Output error messages
  File "/usr/lib/python3.6/site-packages/dnf/yum/rpmtrans.py", line 626, in verify_tsi_package
    display.verify_tsi_package(pkg, count, total)
  File "/usr/lib/python3.6/site-packages/dnf/yum/rpmtrans.py", line 108, in verify_tsi_package
    self.progress(pkg, self.PKG_VERIFY, 100, 100, count, total)
  File "/usr/lib/python3.6/site-packages/dnf/modules.py", line 505, in progress
AttributeError: 'NoneType' object has no attribute 'enabled'
The command '/bin/sh -c dnf upgrade -y dnf python3-dnf dnf-conf && dnf clean all' returned a non-zero code: 1


Version-Release number of selected component (if applicable):

# rpm -q dnf
dnf-2.6.4-1.git.77.70e46c8.fc26.noarch

For the upgrade the old one is:

# rpm -q dnf
dnf-2.6.0-3.git.40.c0f7fc6.module_a7788b02.noarch