Hi,

Would it be possible to get a new release of the ruby-libvirt gem pushed to rubygems?

Currently with the latest vagrant moving to ruby 3.0, bumping into an issue with ruby-libvirt having problems being installed as a dependency of vagrant-libvirt:

The latest master contains a fix for the include path of the st.h file from ruby includes.

There is a workaround mentioned at https://github.com/hashicorp/vagrant/issues/12445#issuecomment-876566065 using:

CFLAGS="-I/opt/vagrant/embedded/include/ruby-3.0.0/ruby" vagrant plugin install vagrant-libvirt

I've done a test using rvm with both ruby 2.6.6 and 3.0.0 to check building a local package of the latest tip of ruby-libvirt can be installed correctly for both ruby 3.0 and earlier so it shouldn't break with slightly older versions of vagrant.

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