The first time I encountered the Env::Array module when I received a sample code from a client. I did not know that module but it is not that surprising, after all there are nearly 10,000 modules on CPAN already.

I did not have it on my Linux machines and as I tried to install it, I could not get far. As it seem this module does not exist any more. According to this note the module was made obsolete back in 5.6.0.

My first thought was that the client might be still using some ancient version of Perl (yeah, I know, bad reflexes, but I encountered so many such cases). After some further Google-ing I found this link on ActiveState Env::Array I don't have ActivePerl installed here but I guess that's there in the AP distribution.

This is the first time I encounter a case where there is a module in ActivePerl that is not on CPAN.

Are there more such cases?
Is there something we should do about this?
My immediate issue is of course that I cannot try the clients code without modification but...
Can we take this (and probably similar) modules from the ActivePerl distro and upload to CPAN?
Should we?