Old discussions elided as I'd think stuff will have changed a lot. OS X Ventural 13.2.1 [R.app GUI 1.79 (8160) aarch64-apple-darwin20] (just downloaded from: ) Fresh installation, open the R.app, at the R console
library(rattle)
rattle()
Every time I start, it reprompts for installing GTK2 (see above) ... quitting and restarting causes that to happen again ... and again... clearly, something is not taking ... pointers to the many fine manuals appreciated.
As above, installed, load the rattle library, authorize the reinstallation of GTK+, loop forever.