Chez SRFIs Upstream
I have finally gone through with it and updated my Chez Scheme port of the Portable SRFIs project to the latest I could find. That's a pretty old release, but everything seems to be there, so I think we are in good shape. At any rate, I have submitted a merge request for the changes to be submitted in, finally, after more than 3 years of not doing so.
This means that the master branch of my Chez-SRFI project should now work again out of the box for Chez Scheme, and it should now be easier to track and move changes upstream as well.