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bin/brew: re-exec self under Rosetta if needed #9287

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bin/brew: re-exec self under Rosetta if needed #9287

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10 changes: 10 additions & 0 deletions bin/brew
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,16 @@ then
fi
fi

# If we're in /usr/local, which is the prefix we've set aside for Intel under Rosetta 2,
# and this is an arm64 machine not running under Rosetta, then re-exec this same file
# within Rosetta with all arguments passed to it.
if [[ "$(uname -s)" = "Darwin" ]] && \
[[ "$HOMEBREW_PREFIX" = "/usr/local" ]] && \
[[ "$(sysctl -n hw.optional.arm64 2>/dev/null)" = "1" ]] && \
[[ "$(sysctl -n sysctl.proc_translated 2>/dev/null)" = "0" ]]; then
exec arch -x86_64 "$HOMEBREW_BREW_FILE" "$@"
fi

HOMEBREW_LIBRARY="$HOMEBREW_REPOSITORY/Library"

# Copy and export all HOMEBREW_* variables previously mentioned in
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