Using env variables in config

[albertsj1]

I'm wondering if it's possible to use environment variables in my aerospace.toml?
I'd like to DRY some of configuration for aerospace, sketchybar, and borders, and I thought the ability to use environment variables would help with this.
For example, my values for gaps in aerospace I'd like to be the same value of the border line in borders. I'd also like the top gap to be the same as the height of sketchybar.

If that's no possible, is there any support for including a file in the aerospace.toml configuration? I could then include a partial of the gap config that I want.

Thanks