I've just published draft #6 of SRFI 152.  It was submitted by John

Cowan, author of the SRFI.

  https://srfi.schemers.org/srfi-152

See John's recent message for his comments on the draft.

Here's the diff:

  https://github.com/scheme-requests-for-implementation/srfi-152/compare/5916c1ed18245857dec9ec93bbb8da97bb392705...b6cbda68b8a6681658d769e7880aa2c0ae42a262

Regards,

SRFI Editor