> > % xcode-select --install > xcode-select: error: command line tools are already installed, use "Software Update" to install updates > I did the following: $ sudo rm -rf /Library/Developer/CommandLineTools $ xcode-select —install $ ls /Library/Developer/CommandLineTools/SDKs MacOSX.sdk MacOSX10.15.sdk MacOSX11.0.sdk Regards, Csaba