New comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/issues/34126#issuecomment-974642659

Comment:
Unfortunately, it would seem Signal *is* using the npm repository version instead of our own. Should that be fixed to use system electron, it would be brought closer to actually working on i686.

It was initially disabled because it failed to build for i686, so if electron isn't the only issue, more investigation might be necessary. I can't actually find the specific build failure. Sharing the build failure you got would be a good start.