And if you struggle with Xcode claiming large amounts of disk space:

1. Use DevCleaner[0] to remove old/unnecessary device support files.

2. Remove platforms you don't develop for, e.g.

- rm -rf /Applications/Xcode.app/Contents/Developer/Platforms/Watch*

- rm -rf /Applications/Xcode.app/Contents/Developer/Platforms/AppleTV*

DevCleaner freed up 10G+ for me the first time, the two rm commands above free up ~3G each.

[0] https://github.com/vashpan/xcode-dev-cleaner