Homebrewでyoutube-dlをインストールしたときの作業ログ。 いくつかエラーが出たので。 % brew install youtube-dl ... Error: python@3.9: the bottle needs the Apple Command Line Tools to be installed. You can install them, if desired, with: xcode-select --install You can try to install from source with: brew install --build-from-source …