Did you manage to patch MIT Scheme?
The patches already applied cleanly in their previous incarnation, back when you had the asymmetry between http-syntax using /src/lib/runtime but httpio using /src/runtime. This was back when your gitlab repo was of a size that was still cloneable, and these are thankfully still on your github mirror, including the ht{3}p-syntax name. The one thing I found curious was the inclusion of changed lines where the only change seems to be a switch from tabs to spaces. I didn't proceed to compilation because the double work >>58 felt silly.
I'm considering setting up Unix shells for people who need them in our small community. To host a textboard or a personal web site. Without PHP, but with Common Lisp and Scheme!
Are you going to apply CPU quotas or are you going to give away free computing resources?