Merge pull request #20974 from Homebrew/arm_tier_1

Make Linux ARM64/AARCH64 Tier 1 supported

Author: p-linnane

.github/workflows/docker.yml

@@ -206,10 +206,6 @@ jobs:
 
       - name: Set environment variables
         run: |
-          if [[ "${ARCH}" == "arm64" ]]; then
-            echo "HOMEBREW_ARM64_TESTING=1" >> "$GITHUB_ENV"
-          fi
-
           # odeprecated: remove 20.04 in Homebrew >=4.7
           if [[ "${VERSION}" == "20.04" ]]; then
             echo "HOMEBREW_GLIBC_TESTING=1" >> "$GITHUB_ENV"
@@ -219,7 +215,7 @@ jobs:
           ARCH: ${{ matrix.arch }}
 
       - name: Run brew test-bot --only-setup
-        run: docker run --env HOMEBREW_ARM64_TESTING --env HOMEBREW_GLIBC_TESTING --rm brew brew test-bot --only-setup
+        run: docker run --env HOMEBREW_GLIBC_TESTING --rm brew brew test-bot --only-setup
 
       - name: Log in to GitHub Packages (BrewTestBot)
         if: fromJSON(steps.attributes.outputs.push)

.github/workflows/tests.yml

@@ -391,9 +391,7 @@ jobs:
       - name: Setup environment variables
         run: |
           # Set enviroment variables to bypass `brew doctor` failures on Tier >=2 configurations
-          if [[ "${MATRIX_NAME}" == "test-bot (Linux arm64)" ]]; then
-            echo "HOMEBREW_ARM64_TESTING=1" >> "$GITHUB_ENV"
-          elif [[ "${MATRIX_NAME}" == "test-bot (Linux Homebrew glibc)" ]]; then
+          if [[ "${MATRIX_NAME}" == "test-bot (Linux Homebrew glibc)" ]]; then
             echo "HOMEBREW_GLIBC_TESTING=1" >> "$GITHUB_ENV"
           fi
         env:

Library/Homebrew/extend/os/linux/diagnostic.rb

@@ -82,11 +82,11 @@ def check_umask_not_zero
         sig { returns(T.nilable(String)) }
         def check_supported_architecture
           return if ::Hardware::CPU.intel?
-          return if Homebrew::EnvConfig.developer? && ENV["HOMEBREW_ARM64_TESTING"].present? && ::Hardware::CPU.arm?
+          return if ::Hardware::CPU.arm? && ::Hardware::CPU.is_64_bit?
 
           <<~EOS
             Your CPU architecture (#{::Hardware::CPU.arch}) is not supported. We only support
-            x86_64 CPU architectures. You will be unable to use binary packages (bottles).
+            x86_64 or ARM64/AArch64 CPU architectures. You will be unable to use binary packages (bottles).
 
             #{support_tier_message(tier: 2)}
           EOS

docs/Support-Tiers.md

@@ -40,7 +40,7 @@ For Tier 1 support, Homebrew on Linux must be all of:
 - have a Linux kernel >= 3.2
 - if running Ubuntu, using an Ubuntu version in "standard support": <https://ubuntu.com/about/release-cycle>
 - installed in the default prefix (i.e. `/home/linuxbrew/.linuxbrew`)
-- running on a supported architecture (i.e. Intel x86_64)
+- running on a supported architecture (i.e. Intel x86_64 or ARM64/AArch64)
 - not building official packages from source
 - you have `sudo` access on your system
 
@@ -61,7 +61,7 @@ Tier 2 configurations include:
 - Linux versions with a system `glibc` version < 2.35 (but >= 2.13), requiring the Homebrew `glibc` formula to be installed automatically
 - using official packages that need to be built from source due to installing Homebrew outside the default prefix
   (i.e. `/opt/homebrew` on Apple Silicon, `/usr/local` on Apple Intel x86_64, `/home/linuxbrew/.linuxbrew` for Linux)
-- running on a not-yet-supported architecture (i.e. Linux ARM64/AARCH64)
+- running on a not-yet-supported architecture
 - devices using OpenCore Legacy Patcher with a Westmere or newer Intel CPU
 
 ## Tier 3