New comment by tibequadorian on void-packages repository

https://github.com/void-linux/void-packages/pull/35961#issuecomment-1073340874

Comment:
> What is the point of this, is there anything to gain from using variables?

It makes it easier to switch to a mirror

>This is useless, there is no repetition, we just set the distfiles once, adding the variable into the copied download link is more work.
It also makes it harder to just copy the download link out of the template.

Sorry, I don't understand how this is different to other `*_SITE` variables, can you explain?