RCall installation failing with ENV = "*"
I'm following the instructions, ENV["R_Home"]="*" then using Pkg and Pkg.build("RCall") and getting the following error:
"ERROR: Error building RCall:
Warning: 'r' already in 'channels' list, moving to the top
Collecting package metadata (current_repodata.json): ...working... done
Solving environment: ...working... done
All requested packages already installed.
[ Info: Installing R via Conda. To use a different R installation, set the "R_HOME" environment variable and re-run Pkg.build("RCall").
[ Info: Running conda config --add channels r --file 'C:\Users\annoy\.julia\conda\3\x86_64\condarc-julia.yml' --force in root environment
[ Info: Running conda install -y 'r-base>=3.4.0,<4' in root environment
ERROR: LoadError: Could not find library C:\Users\annoy.julia\conda\3\x86_64\Library\bin\R\bin\x64\R.dll. Make sure that R shared library exists.
Stacktrace:"

I'm not sure what happened there since there seem to be two levels of bin in your R_HOME
There have been some changes to this in the newest version. Perhaps you could try again with new versions of Julia and RCall.jl and close this if it's no longer a problem?
I'm closing this as stale, but I'm happy to re-open @MaxMenzies if you're still having problems.