bug#56016: [BUG] Various confusing error messages.

[Josselin Poiret]

Hello,

paren--- via Bug reports for GNU Guix <bug-guix@gnu.org> writes:
> ~ Unbound variable while building package cache
>
> This might be a Guile or Guix thing, not sure which. Using the recent
> libpng/guix-gaming problem as an example:
>
> ---
> Generating package cache for
> '/gnu/store/1mzdd7rf9r34xiibcs1gpjsf7jkh6a0r-profile'...
> (exception unbound-variable (value #f) (value "Unbound variable: ~S")
> (value (libpng-1.2)) (value #f))
> ---

For now, [1] should add more context to this error message by printing
the whole backtrace.

You need the new `guix pull`'d guix first though before you can benefit
from it for future guix pulls (and time-machines) :)

[1] https://issues.guix.gnu.org/55911
    https://debbugs.gnu.org/cgi/bugreport.cgi?bug=55911

Best,
-- 
Josselin Poiret