[epicide]

If you mean for script portability: you can still easily call scripts with bash directly. For scripts that modify the environment, use bass.

If you mean that you still have to use bash on other machines: yeah, I feel you there.

At least for me, I'm fortunate that if I end up using a machine frequently, I can just install fish and add my config/dot files.

[segfaultbuserr]

I used to have Vim with dozens of plugins installed, nowadays I consciously use Vim without relying on any plugin and try learning to do the same with only the basic movement commands, so I can be productive no matter what machine I'm using/logged into today - otherwise they'll be forgotten (hackers used to survive in the original vi without visual mode or multiple undo, I think surviving a pluginless Vim shouldn't be difficult). Some for the shell.