It seems Guix installer
is broken - I reported in June 2020 and saw another person report this bug again on the same help-guix mailing list. The graphical installer somehow appears to go into an infinite loop of repeating the same questions.
In addition , I watched this issue mentioned at https://youtu.be/jx3YF-ihjUg
Is there a bug tracker ID already assigned for this?
-Yasu