The new version of Figma has the ability to use rem units. To control them, use the set unit scale property.
But this property is specified in pixels.
Is it possible to set unit scale in vw units?
It is very important for me. This would allow layout in relative units of measure. And take values immediately from the program.
Unfortunately, this is not possible. Even REM was recently introduced.
There's a featured request opened in the Figma forums about it, you can try to upvote it.