* installing *source* package ‘triptych’ ...
** package ‘triptych’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
using C++ compiler: ‘Apple clang version 14.0.3 (clang-1403.0.22.14.1)’
using C++20
using SDK: ‘MacOSX11.3.sdk’
clang++ -arch x86_64 -std=gnu++20 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG  -I'/Volumes/Builds/packages/big-sur-x86_64/Rlib/4.4/cpp11/include' -I/opt/R/x86_64/include    -fPIC  -falign-functions=64 -Wall -g -O2   -c cpp11.cpp -o cpp11.o
clang++ -arch x86_64 -std=gnu++20 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG  -I'/Volumes/Builds/packages/big-sur-x86_64/Rlib/4.4/cpp11/include' -I/opt/R/x86_64/include    -fPIC  -falign-functions=64 -Wall -g -O2   -c md.cpp -o md.o
In file included from md.cpp:2:
./mdiag.h:4:10: fatal error: 'ranges' file not found
#include <ranges>
         ^~~~~~~~
1 error generated.
make: *** [md.o] Error 1
make: *** Waiting for unfinished jobs....
ERROR: compilation failed for package ‘triptych’
* removing ‘/Volumes/Builds/packages/big-sur-x86_64/results/4.4/triptych.Rcheck/triptych’