When I try to install gnome-boxes, I receive the error:

warning: cannot resolve "tracker," a dependency of "gnome-boxes"

Package tracker3-miners seems to be the equivalent of tracker, but installing it didn't fix the problem.

I'm using the x64 openrc version of parabola.

Edit: I installed gnome-boxes by telling pacman to use tracker3-miners as the missing dependency. When I run gnome-boxes from the command line, I receive the error that shared library libtracker-sparql.2.0.so.0 does not exist.

This library preventing installation of gnome-boxes is an old bug that was supposedly fixed:
https://labs.parabola.nu/issues/1517