I threw out a suggestion to the Perl 6 people that Perl
have pluggable parsers that can be swapped, allowing you
to have a Swedish version of Perl but still use standard
Perl modules.
I don't think people liked the idea that much.
But a better first language is probably Smalltalk,
recommended by the likes of merlyn at RE: Perl as a first language. And
I have been told that that is also available in language
specific versions. I don't know whether a Swedish version
exists, but if it doesn't it should not be that hard to
produce one.