hardware: add arm64?

[cho-m]

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Provide a single method to check arm64. This should replace usage of both:

• Hardware::CPU.arm? && Hardware::CPU.is_64_bit?
• Hardware::CPU.arch == :arm64

And maybe other variations that we use to detect this given Linux arm32 is still considered supported at a lower tier.

Mainly want to reduce variations and line length on Homebrew/core side for a common check

[Copilot]

Pull Request Overview

This PR introduces a new convenience method Hardware::CPU.arm64? to simplify checking for 64-bit ARM architecture. This replaces verbose checks like Hardware::CPU.arm? && Hardware::CPU.is_64_bit? and Hardware::CPU.arch == :arm64 with a single, more readable method call.

• Adds new arm64? method to Hardware::CPU module
• Updates all instances across the codebase to use the new method
• Improves code readability and reduces line length

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Library/Homebrew/hardware.rb	Adds new arm64? public API method that checks if CPU is 64-bit ARM
Library/Homebrew/requirements/arch_requirement.rb	Replaces Hardware::CPU.arm? && Hardware::CPU.is_64_bit? with Hardware::CPU.arm64?
Library/Homebrew/extend/os/mac/hardware.rb	Replaces Hardware::CPU.arch == :arm64 with Hardware::CPU.arm64?
Library/Homebrew/extend/os/linux/extend/ENV/super.rb	Replaces Hardware::CPU.arch == :arm64 checks with Hardware::CPU.arm64? (2 instances)
Library/Homebrew/extend/os/linux/diagnostic.rb	Replaces Hardware::CPU.arm? && Hardware::CPU.is_64_bit? with Hardware::CPU.arm64?

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[Copilot]

Pull Request Overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated no new comments.

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[MikeMcQuaid]

Makes sense, thanks!

I do think we should probably kill all use of/references to arm32 and PPC.