Hi,

> -    '(#:phases
> +    `(#:configure-flags
> +      (list
> +       ,@(if (%current-target-system)
> +       ;; If true, gtkdoc-scangobj will try to execute a
> +       ;; cross-compiled binary.
> +       '("-Dgtk_doc=false")
> +       '("-Dgtk_doc=true")))

These two lines above need to be indented.

Otherwise, this patch series looks good to me, but I didn't test it.

Greetings,
Maxime.