There are ongoing efforts to stabilise a SRFI (like SRFI198 [0]), which would be the first step towards this. (First get the SRFI, then once that's stable and well implemented, it can be considered for the next spec).

Unfortunately there's a lot of disagreement between the bigger players as to how this should be handled:

> > 1) The authors appear to be deadlocked

> No need to soften it with an "appear", we are intractably deadlocked.

[0] https://srfi.schemers.org/srfi-198/srfi-198.html