FYI, in case this is not intended: ❯ otool -L /Library/Frameworks/R.framework/Versions/4.4-arm64/Resources/lib/libR.dylib [...] /usr/lib/libedit.3.dylib (compatibility version 2.0.0, current version 3.0.0) [...] x86_64 builds seem to use readline, still. Gabor