I tried to install rattle and RGtk2. I used
install.packages(
"https://cran.microsoft.com/snapshot/2021-12-15/bin/windows/contrib/4.1/RGtk2_2.20.36.2.zip",
repos = NULL
)
to install RGtk2.
Then I received an error message saying
Error in install.packages : package ‘RGtk2’ not installed because it is not built for UCRT
I wonder how can I solve this problem? Thanks~