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
, installHomebrew
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