Hi Andreas,

Andreas Enge <andreas@enge.fr> writes:

> Hello,
>
> it looks as if commit ff5f34ae757d709987896d6164bf125319a0f764 breaks
> building of at least one package, perl-gd, depending on
> perl-extutils-pkgconfig.
>
> The latter is now defined as
> (define-syntax perl-extutils-pkgconfig
>   (identifier-syntax (perl-extutils-pkgconfig-for-target
>                       (%current-target-system))))
> which apparently does not play well with what is written in the former as
>     (native-inputs
>      (list perl-extutils-pkgconfig)) :
> guix package: error: gnu/packages/gd.scm:103:2: package `perl-gd@2.73' has an invalid input: ("_" #<syntax-transformer perl-extutils-pkgconfig>)

Usually errors which involve #<syntax-transformer> somewhere are caused
by stale .go files (guile doesn't know how to recompile dependent .scm
files).  I would suggest a good old `grep -Rl --include '*.go'
perl-extutils-pkgconfig ./gnu | xargs rm`.

Best,
-- 
Josselin Poiret