Maintain Homebrew for Apple Silicon and Rosetta
I needed to have Homebrew available for x86_64 in Rosetta mode without conflicting with native Apple Silicon mode. To do that: Instantiate a new Terminal running in Rosetta: open -a Terminal --new --arch x86_64 In the new Terminal, install Homebrew as per the official manual: /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)" Edit .zprofile to: Output current architecture Add x86 to Terminal title when running in Rosetta mode Use corresponding brew version to match current architecture title() { printf '\e]0;%s\a' "$1" } # Detect architecture and set up Homebrew accordingly ARCH=$(arch) echo "Current architecture: $ARCH" if [[ $ARCH == "arm64" ]]; then # Apple Silicon eval "$(/opt/homebrew/bin/brew shellenv)" else title "x86" # Intel eval "$(/usr/local/bin/brew shellenv)" fi