[css-mixins-1] Is `@env` order dependent?

[andruud]

For example:

@mixin --m() {
  @env --x:1;
  & { --a: env(--x); }
  @env --x:2;
  & { --b: env(--x); }
}

What is the value of --a and --b here?

[tabatkins]

I wasn't originally intending it to be order-dependent, but given our resolutions last week to make "stylesheet-level" things just apply as they come, yes, I think @env would be order-dependent and you'd get different values for --a and --b here.

(However, I think I'd prefer that, for a given rule scope, we just take the last definition. I haven't given it enough thought yet to know if that is possible for the other stylesheet-level things, like custom media.)