Hello Laura,
I've just installed guix on debian.
What I did: installed guix using the script, then guix pulled.
Then did what it said on the final line: added to $PATH the
.config/guix/current/bin stuff.
I also added that to the thne non-existent .bash_profile
Then ran guix pull again, it did the profile migration.
Then ran guix pull again, and it did not want to do the profile
migration any more.
Yes, that were the steps I followed and tried different in between. Please let me know when it works for you, because I am wasting too many days stuck with this.
I will write you on another thread now :)