Error When Installing the Command Line Developer Tools on Mac

[andresrcs]

This is a macOS specific issue (not directly related to R), you could try the solution on this related thread.

You can't install the software because it's not available on the software update server

I ended up removing my current command line tools in terminal: sudo rm -rf /Library/Developer/CommandLineTools then I downloaded an older version of the command line tools since git was my main problem and it no longer runs on OSX 10.15. (https://github.com/Homebrew/homebrew-core/issues/52490) I did this by going to https://developer.apple.com/download/more/ and downloading Command Line Tools 11.3.1! It works now. Not a permanent fix, but helped.