And corporate shops have rules for a reason. And what you're advocating would in many places be seen as grounds for not just dismissal, but prosecution.

Exactly. If you're developing stuff for your own amusement, then deployment to a dozen systems running mission critical stuff is never going to be a problem.

In my case it is -- which means I have to look closely at whether I absolutely need a module, or whether I can get by with something a little less 'jazzy'. This week's query was about using WWW::Mechanize -- that module isn't installed on the system I'm developing for, but LWP::UserAgent (which Mech uses) is present, so that decision is made for me.

If you look at it from the IT guy's perspective, installing a module is no easy task: the latest version of X might mean you have to upgrade Y, which has always worked fine, and of course that means you need to also update Z and W .. and pretty soon, subtle problems start to turn up. And I ran into a 'version' problem recently, where an older version of Mech worked fine, but the newer one, on a different platform, didn't.