In Debian 11, Pango now depends on PCRE2, so R 3.x will not be compiled with
Pango support if we hide PCRE2 to prevent R 3.5 and 3.6 from taking an unnecessary
dependency on PCRE2.
To check if R 3.x was compiled without Pango support, look for this line in the
configure output:
checking whether pkg-config knows about cairo and pango... no
Or in R, check if the "bitmapType" option defaults to "Xlib" instead of "Cairo":
> getOption("bitmapType")
"Xlib"
