@mflatt I get this error with make cs: /home/samth/sw/plt/racket/src/build/ChezScheme/ta6le/bin/ta6le/scheme -b /home/samth/sw/plt/racket/src/build/ChezScheme/ta6le/boot/ta6le/petite.boot -b /home/samth/sw/plt/racket/src/build/ChezScheme/ta6le/boot/ta6le/scheme.boot --script <http://compile-file.ss\|compile-file.ss> --unsafe --dest "/home/samth/sw/plt/racket/src/build/cs//" chezpart.sls Exception in compile-file: failed trying `(define-ftype T (function __collect_safe () void))`; probably you need a newer Chez Scheme but that Chez Scheme is the one that just got checked out by the build process

seems like I needed to re-run make in the chez dir

Is this a checkout where you had run make cs before? It looks like the makefile may not rebuild Chez Scheme if the executable already exists.

And in that case, running make in “/home/samth/sw/plt/racket/src/build/ChezScheme” would let you make progress for now

yes, that’s the case, and running make did fix things