I've just published draft #2 of SRFI 168.  It was submitted by
Amirouche Boubekki, author of the SRFI.

  <https://srfi.schemers.org/srfi-168/>

Here are Amirouche's comments on the draft:

- I improved the naming

- I moved `transactional` to srfi-167 and adapted the
specification to make it possible to compose layers relying on
srfi 167. Unlike previously this layer doesn't take ownership of
the transaction.

Here's the diff:

  <https://github.com/scheme-requests-for-implementation/srfi-168/compare/04091b02a0ef0a62812ec9832b2f5d5e618caa6f...133b338e4e8c0c65499c9709d7189d9a066cfba6>

Regards,

SRFI Editor