On 10-09-2022 17:26, Marius Bakke wrote:
> +                           #:allowed-references #$allowed-references
> +                           #:disallowed-references #$disallowed-references

Unless I'm mistaken (I haven't tested this), this will become 
#:allowed-references ("/gnu/store/..." ...) -- it tries to use a string 
as a procedure.  Proposal:

#:allowed-references (list #$allowed-references)
#:disallowed-references (list #$disallowed-references)

Greetings,
Maxime.