First, thank you for the package! When it's all working it's a joy to use. Unfortunately, right now I am encountering an error.

If I execute M-x guix-package-by-name immediately after starting a fresh Emacs instance, I get the following error (as copied from *Messages*):

guix-geiser-eval: Error in evaluating guile expression: While executing meta-command:
error: %max-returned-list-size: unbound variable

Attempting to run the same command again in the same Emacs instance gives me a slightly different error:

guix-geiser-eval: Error in evaluating guile expression: While executing meta-command:
error: package-names*: unbound variable

This is with emacs 27.2 and emacs-guix 0.5.2-4.8ce6d21 installed via Guix on Guix System. Nothing in my Emacs config should be relevant except the use-package declarations to load the packages:

(use-package geiser-guile)

(use-package guix)