New comment by Marie-Joseph on void-packages repository

https://github.com/void-linux/void-packages/pull/34853#issuecomment-1009420032

Comment:
> So ucontext isn't needed anymore?

Apparently not, see https://github.com/racket/racket/issues/4100#issuecomment-1003784010

> the archs pattern is bad

It seems to work for CI, but I'll change it to be safe

> [ppc] should not be disabled this way

How should it be disabled? As I mentioned, the only reason I disabled it is build time. If that's not an issue, I can turn it back on (though only for 32-bit big-endian versions because that's what Chez supports)