It occurred to me that Huub wrote in gmane.os.netbsd.help:
> -------------------
> configure: error: Package requirements ( glib-2.0 >= 2.8.0   gobject-2.0 
> >= 2.0.0   gmodule-2.0 >= 2.8.0   gobject-2.0 >= 2.8.0   gnome-vfs-2.0 
> >= 2.5.3   libbonobo-2.0 >= 2.13.0   gconf-2.0 >= 1.1.11   esound >= 
> 0.2.26    audiofile >= 0.2.3) were not met:
>
> No package 'glib-2.0' found
> No package 'gobject-2.0' found
> No package 'gmodule-2.0' found
> No package 'gobject-2.0' found

Are you installing from a fresh pkgsrc checkout? Which pkgsrc branch? What
What OS branch? 

This kind of smells like the problems several packages had right after the 
more strict usage of USE_LANGUAGES got implemented, but I can't reproduce
it anymore.