My thought also. I often use local models for Common Lisp and Scheme coding and edit errors on s-expressions are a time-waster. Using sift with appropriate lisp codings skills might improve things. Worth a try.

After my morning coffee I will try an installation using:

brew install guile ; git clone https://github.com/jjba23/sift.git ~/sift ; ln -s ~/sift/bin/sift /usr/local/bin/sift ; sift version ; sift doctor