integrity will cause recursive cache-busting

I wrote up [a presentation on this problem and solutions](https://docs.google.com/presentation/d/1qfoLTniLUVJ5YNFrha7BaVumAnW0ZgcCfUU8UbyyuYY/edit#slide=id.g1f527b5ce9_0_108) in the context of JavaScript modules. One issue I noticed is that integrity="" works particularly poorly with this type of solution. See the slides in the section labeled "cache friendliness!?" (slides 12-14)

I'm not sure what the right solution is, but perhaps both modules and CSS fetches would be better off with some sort of out-of-band configuration, which I also discuss in my slides.