Attila Lendvai schreef op di 28-09-2021 om 23:40 [+0200]:
> * guix/build/union.scm (resolve-collision/alphanumeric-last): New function.
> (warn-about-collision): Renamed to default-collision-resolver.
> ---
> 
> this should work, but i cannot test it, because srfi-43 seems not to be
> available on the build side:
> 
> unpacking bootstrap Guile to '/home/alendvai/workspace/guix/guix/test-tmp/store/qky0jf68rr7pnsvmhj0ay42rzh4qk6r9-guile-bootstrap-2.0'...
> [...] output without sfri-43.go
> 
> and then unsurprisingly: "no code for module (srfi srfi-43)"

SRFI-43 is in Guile since Guile 2.0.10, according to Guile's NEWS.
The bootstrap guile is older:

$(guix build -e '(@@ (gnu packages bootstrap) %bootstrap-guile)')/bin/guile --version
guile (GNU Guile) 2.0.9
[...]

Greetings,
Maxime.