The xfig() device is deprecated in R 4.4.0

So we do not test it any more.

Cf. d04d9dbcf4

test/test.R

@@ -34,8 +34,10 @@ tryCatch(capabilities(), warning = function(w) {
 
 # Check graphics devices
 # https://stat.ethz.ch/R-manual/R-devel/library/grDevices/html/Devices.html
-for (dev_name in c("png", "jpeg", "tiff", "svg", "bmp", "pdf", "postscript",
-                   "xfig", "pictex", "cairo_pdf", "cairo_ps")) {
+devices <- c("png", "jpeg", "tiff", "svg", "bmp", "pdf", "postscript",
+             if (getRversion() < "4.4.0") "xfig",
+             "pictex", "cairo_pdf", "cairo_ps")
+for (dev_name in devices) {
   # Skip unsupported graphics devices (e.g. tiff in R >= 3.3 on CentOS 6)
   if (dev_name %in% names(capabilities()) && capabilities(dev_name) == FALSE) {
     next