iconv: basesystem vs pkgsrc

[Frédéric Fauberteau <triaxx%NetBSD.org@localhost>]

Hi,

Experiencing a conversion error with Glib, I am looking to iconv. I do 
not understand why there is such a difference between the two iconv 
binaries in terms of number of supported encodings.

My problem is:
$ echo "hello" | /usr/pkg/bin/iconv -f UTF-8 -t 646
/usr/pkg/bin/iconv: conversion to 646 unsupported
/usr/pkg/bin/iconv: try '/usr/pkg/bin/iconv -l' to get the list of 
supported encodings

$ /usr/pkg/bin/iconv -l | wc -l
     110

$ /usr/bin/iconv -l | wc -l
     667