I've seen this, and it's a ridiculous pre-requisite. If I'm going to work on side projects they need to be things I find interesting, and that I'm willing (and

I've seen this, and it's a ridiculous pre-requisite. If I'm going to work on side projects they need to be things I find interesting, and that I'm willing (and able) to work on when I'm tired/hungry/cranky/otherwise worn out at the end of a day of paid work... which pretty much means they need to be my side projects, rather than dull PRs on some OSS uber-project where I maybe have to deal with a load of politics, jump through a load of hoops, or perhaps the barrier to entry for useful contribution is too high (e.g., due to project complexity).