Issue with unmet dependencies with Fedora 31 and Vagrant 2.2.6 (has workaround)

[unfulvio]

I ran into the following issue after updating to Fedora 31 from Fedora 30. I was running Vagrant 2.2.5 and then updated contextually to 2.2.6.

When doing a vagrant up, Vagrant threw some error about plugins needing attention, so I tried first to repair. That wasn't enough so I tried to reinstall - at that point I got this error:

Vagrant failed to properly resolve required dependencies. These
errors can commonly be caused by misconfigured plugin installations
or transient network issues. The reported error is:

conflicting dependencies listen (~> 3.0.0) and listen (= 3.1.5)
  Activated listen-3.1.5
  which does not match conflicting dependency (~> 3.0.0)

  Conflicting dependency chains:
    listen (= 3.1.5), 3.1.5 activated

  versus:
    middleman-core (= 4.2.1), 4.2.1 activated, depends on
    listen (~> 3.0.0)

I am not sure who introduced that dependency but the only way I could solve it was to re-install the plugin with:

$ VAGRANT_DISABLE_STRICT_DEPENDENCY_ENFORCEMENT=1 vagrant plugin install vagrant-hostsupdater

The VAGRANT_DISABLE_STRICT_DEPENDENCY_ENFORCEMENT=1 made it pass.

Perhaps this is something you should be aware of.

Thank you and happy new year