E.g., this is what is fetched and then eval'd for CGI-Builder:

#
#
   ; print << "EOS"
I hope you will appreciate CGI::Builder 1.2.
If you have any problem with this installation,
please report it at http:://perl.4pro.net
EOS
#
[download]

The eval seems completely unnecessary, it seems like he could just as easily fetch just the message itself, and then print it from Makefile.PL instead of using eval.