I keep relearning this lesson: First it was with competitive gaming. In tournaments, competition machines have their configs reset after each match. You have a

I keep relearning this lesson: First it was with competitive gaming. In tournaments, competition machines have their configs reset after each match. You have a limited amount of time to setup before game time because admins also have to check your config. I learned to have a fairly simple config (i.e. close to defaults) so I wouldn't run out of time. Second time round it was with vim and Ruby. I spent nearly 2 months trying to get the right combination of plugins to get something close to a decent IDE experience. I ended up packing it in for RubyMine which gave me what I wanted right out the box.