[manume]

In my experience, Bundler has improved a lot with regard to resolving dependency issues over the years. And OS libs are only really depended on by a few gems, no? 99% of them don't use FFI or call OS libs.

Moreover, how often do you really move a script to a completely different OS, where you don't know which OS libs are installed? And wouldn't those missing OS libs also be a problem when writing the script in Bash or any other language?