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Postings from October 1999
>>>>> On Tue, 26 Oct 1999 15:09:14 -0400 (EDT), Ilya Zakharevich <ilya@math.ohio-state.edu> said:
> Andreas J. Koenig writes:
>> > Devel::Peek on CPAN is for backlevel Perls. Do not know how to
>> > designate this with version numbers. Just did not want people doing
>>
>> > install Devel::Peek
>>
>> > to get the latest snapshot of 5.005_7? from CPAN. ;-)
>>
>> The bug in CPAN.pm you allude to is fixed for quite a while now. (IIRC)
> Somehow I do not follow. Perl5.005 requires Devel::Peek from CPAN
> (the latest version found there). Perl5.006 does not require
> Devel::Peek from CPAN, period. Similarly for Devel::DProf.
> How should the versions on CPAN and in Perl distribution be organized
> to allow for this?
By not touching version number nor timestamp. If you have Version 2.7
on CPAN and Graham then includes Version 2.7 without a change in perl
5.00504, the indexer will not index it for the perl version but leave
it indexed for your distributed version.
> Is not it indexer's job, or CPAN.pm's?
The indexer does something like (I hope I got it right):
if (they have different version){
if (later arrival has higher version){
later arrival which is the higher version wins;
} else {
earlier arrival wins and warning "falling version number" triggered;
}
} elsif (later arrival is distorperlok) {
if (they have no version){
if (filemtime is greater or equal){
Later arrival wins;
} else {
Later arrival wins and warning "falling mtime" triggered;
}
} elsif (
later arrival is not a perl dist
OR
both are perl dists
) {
Later arrival wins
} else {
ignore later arrival, don't touch the database
}
} else {
ignore later arrival, don't touch the database
}
If after all that it still happens for some insane reasons that the
indexer points to a perl version against our intention, CPAN.pm
nowadays doesn't try to install perl. In that case it leaves the user
with a warning that latest version is in the perl distribution.
--
andreas
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