Homebrew: macOS Big Sur and ARM

A description of what changes Homebrew needed to make to get working on macOS 11 Big Sur and what work we've done and are doing to support a new CPU architecture for the first time since Snow Leopard.

Providing details of the biggest changes that Homebrew users have been excited about in the last year: support for Big Sur and the ongoing work for ARM. Provide technical details on what's required for us to support a new operating system from Apple and what the entire Homebrew ecosystem needs to do/change in order to support a new architecture.

Transcript

1. Homebrew macOS Big Sur and ARM Mike McQuaid
2. Mike McQuaid https://github.com/MikeMcQuaid https://twitter.com/MikeMcQuaid A
3. macOS Big Sur
4. macOS 10.16 Big Sur
5. macOS 11 Big Sur
6. macOS 11.1 Big Sur
7. Apple Silicon (ARM)
8. PPC32
9. PPC32 PPC64
10. PPC32 PPC64 x86
11. PPC32 PPC64 x86 x86_64
12. x86 x86_64
13. x86_64
14. x86_64 arm64
15. Rosetta: PPC on x86
16. Rosetta 2: x86_64 on ARM
17. Homebrew /usr/local
18. Homebrew on Linux /home/linuxbrew/.linuxbrew
19. Homebrew ARM /opt/homebrew
20. Homebrew Rosetta 2 /usr/local
21. Bottles bottle do cellar :any_skip_relocation sha256 "65ab13dc5646735a64d821e3eab7f04a55bd0739b83b36769b3d0664de74ed80" => :big_sur sha256 "f551ae0b42199f7636702669a5f32d4fb6bafef330036e8b14f3cfda556a4d32" => :arm64_big_sur sha256 "e82c25ab68b43d632739d345b3ac1c3a6d22a9c8a51d44f9cfc3967e64469794" => :catalina sha256 "4084370b62478a4a3bc1943035542dd9b4d452b606ae9bf738bbc4fa53e19fd5" => :mojave sha256 "b70d7f63371b5a638fa4d2f0e1cc3f27995f3f20ca1aa1712bb711bb6c9b928c" => :high_sierra sha256 "8243b6410ae3d61df3d9c400be33c24b8da0fd0807161a02f38440c18d984661" => :sierra sha256 "e387a861c4a9ceb3014883c851cdc43a56eddba635e1d313d976095ff78bb686" => :el_capitan sha256 "513995a3f0a331a06ac6531ddad6e1812a9c32add2252852c81d8abe6714c5aa" => :yosemite sha256 "d8b4b1fc5969c71bdf24c0793df0d0bcf77475ffd6eeb12a74304d2c6e1c3b1c" => :mavericks end
22. ARM CI = GitHub Actions + MacStadium + Apple DTKs
23. 3850 ARM Big Sur bottles 4615 Intel Big Sur bottles
24. https://formulae.brew.sh/formula/openssl@1.1
25. Homebrew ARM “officially supported”
26. Homebrew 3.0.0