Azure
diff --git a/‎eng/build/Minified.targets‎
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diff --git a/‎eng/build/Workers.Golang.targets‎
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diff --git a/‎eng/ci/official-build.yml‎
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diff --git a/‎eng/ci/public-build.yml‎
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diff --git a/‎eng/ci/templates/jobs/test-e2e-linux.yml‎
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diff --git a/‎eng/ci/templates/jobs/test-e2e-osx.yml‎
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diff --git a/‎eng/ci/templates/jobs/test-e2e-windows.yml‎
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diff --git a/‎eng/ci/templates/public/jobs/test-unit-linux.yml‎
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diff --git a/‎eng/ci/templates/steps/install-tools.yml‎
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diff --git a/‎release_notes.md‎
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@@ -6,6 +6,7 @@
     <_LanguageWorkers Include="$(PublishDir)\workers\java" />
     <_LanguageWorkers Include="$(PublishDir)\workers\powershell" />
     <_LanguageWorkers Include="$(PublishDir)\workers\node" />
+    <_LanguageWorkers Include="$(PublishDir)\workers\native" />
   </ItemGroup>
 
   <!-- Remove worker directories from minified builds -->
 
@@ -0,0 +1,15 @@
+<Project>
+
+  <!--
+    Ships the Go (native) worker config alongside the published CLI so the host
+    can discover the Go worker at workers/native/worker.config.json.
+  -->
+  <ItemGroup>
+    <Content Include="$(RepoRoot)src\Cli\func\StaticResources\nativeWorkerConfig.json">
+      <Link>workers\native\worker.config.json</Link>
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+      <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
+    </Content>
+  </ItemGroup>
+
+</Project>
@@ -37,6 +37,13 @@ variables:
 extends:
   template: v1/1ES.Official.PipelineTemplate.yml@1es
   parameters:
+    # Route 'go' CLI traffic through the centralized internal Go module proxy
+    # so GoZipTool builds can resolve modules in network-isolated CI agents.
+    # See https://aka.ms/goproxy_for_how_to_onboard
+    featureFlags:
+      golang:
+        internalModuleProxy:
+          enabled: true
     pool:
       name: 1es-pool-azfunc
       image: 1es-windows-2022
 
@@ -32,6 +32,13 @@ variables:
 extends:
   template: v1/1ES.Unofficial.PipelineTemplate.yml@1es
   parameters:
+    # Route 'go' CLI traffic through the centralized internal Go module proxy
+    # so unit tests / E2E tests / GoZipTool builds can resolve modules in
+    # network-isolated CI agents. See https://aka.ms/goproxy_for_how_to_onboard
+    featureFlags:
+      golang:
+        internalModuleProxy:
+          enabled: true
     pool:
       name: 1es-pool-azfunc-public
       image: 1es-windows-2022
 
@@ -25,16 +25,22 @@ jobs:
       custom_linux_x64:
         languageWorker: 'Custom'
         runtime: 'linux-x64'
+      go_linux_x64:
+        languageWorker: 'Go'
+        runtime: 'linux-x64'
 
   steps:
   - template: /eng/ci/templates/steps/install-tools.yml@self
 
+  # The 1es-ubuntu-24.04-min image doesn't ship npm. NodeTool@0 in install-tools.yml
+  # installs Node into the agent user's tool cache, but start-emulators.ps1 runs
+  # `sudo npm install -g azurite` and sudo's PATH doesn't include the tool cache.
+  # Install npm system-wide via apt so azurite can be installed and launched as root.
   - bash: |
       sudo apt-get update
-      sudo apt-get install -y npm golang
+      sudo apt-get install -y npm
       npm --version
-      go version
-    displayName: 'Install npm and Go'
+    displayName: 'Install npm'
 
   - pwsh: ./eng/scripts/start-emulators.ps1
     displayName: 'Start emulators (NoWait)'
 
@@ -25,23 +25,40 @@ jobs:
       custom_osx_x64:
         languageWorker: 'Custom'
         runtime: 'osx-x64'
+      go_osx_x64:
+        languageWorker: 'Go'
+        runtime: 'osx-x64'
 
   steps:
   - pwsh: ./eng/scripts/start-emulators.ps1
     displayName: 'Start emulators (NoWait)'
 
-  - script: |
-      brew install go
-      go version
-    displayName: 'Install Go'
-
   - script: |
       sudo chown -R $(id -u):$(id -g) ~/.npm
       npm install -g @azure/functions
     displayName: 'Install @azure/functions'
 
   - template: /eng/ci/templates/steps/install-tools.yml@self
 
+  # On macOS, GoTool@0 (in install-tools.yml) is skipped because it only
+  # ships an amd64 Go binary, which can't run on Apple Silicon agents.
+  # Install an arm64-native Go via Homebrew, pinned to the same major.minor
+  # (1.24) used by GoTool@0 on Linux/Windows, so all three OSes test against
+  # a consistent Go version.
+  - bash: |
+      set -euo pipefail
+      brew install go@1.24
+      GO_PREFIX="$(brew --prefix go@1.24)"
+      GO_BIN="$GO_PREFIX/bin"
+      GO_ROOT="$GO_PREFIX/libexec"
+      # Pin GOROOT to the Homebrew install so the `go` binary doesn't pick up a
+      # stale GOROOT inherited from the hosted agent image (which can point at a
+      # different Go install and cause "package std not found" / version skew).
+      echo "##vso[task.prependpath]$GO_BIN"
+      echo "##vso[task.setvariable variable=GOROOT]$GO_ROOT"
+      GOROOT="$GO_ROOT" "$GO_BIN/go" version
+    displayName: 'Install Go 1.24 (Homebrew, arm64-native)'
+
   - template: /eng/ci/templates/steps/restore-nuget.yml@self
 
   - pwsh: |
 
@@ -25,6 +25,9 @@ jobs:
       custom_win_x64:
         languageWorker: 'Custom'
         runtime: 'win-x64'
+      go_win_x64:
+        languageWorker: 'Go'
+        runtime: 'win-x64'
 
   steps:
   - pwsh: ./eng/scripts/start-emulators.ps1 -NoWait
 
@@ -19,6 +19,17 @@ jobs:
       sudo apt-get -y install fuse-zip
     displayName: 'Install fuse-zip'
 
+  - script: |
+      set -e
+      VERSION=1.24.2
+      ARCHIVE=go${VERSION}.linux-amd64.tar.gz
+      DEST="$AGENT_TOOLSDIRECTORY/go-${VERSION}"
+      mkdir -p "$DEST"
+      curl -fsSL "https://go.dev/dl/${ARCHIVE}" -o "$AGENT_TEMPDIRECTORY/${ARCHIVE}"
+      tar -C "$DEST" -xzf "$AGENT_TEMPDIRECTORY/${ARCHIVE}"
+      echo "##vso[task.prependpath]$DEST/go/bin"
+    displayName: 'Install Go 1.24.2'
+
   - template: /eng/ci/templates/steps/install-tools.yml@self
 
   - template: /eng/ci/templates/steps/restore-nuget.yml@self
 
@@ -38,3 +38,31 @@ steps:
   inputs:
     packageType: sdk
     useGlobalJson: true
+
+- pwsh: |
+    $version = '1.24.2'
+    if ($IsWindows) {
+      $archive = "go$version.windows-amd64.zip"
+      $url = "https://go.dev/dl/$archive"
+      $dest = Join-Path $env:AGENT_TOOLSDIRECTORY "go-$version"
+      New-Item -ItemType Directory -Force -Path $dest | Out-Null
+      $zipPath = Join-Path $env:AGENT_TEMPDIRECTORY $archive
+      Invoke-WebRequest -Uri $url -OutFile $zipPath
+      Expand-Archive -Path $zipPath -DestinationPath $dest -Force
+      $goBin = Join-Path $dest 'go\bin'
+    } else {
+      $archive = "go$version.linux-amd64.tar.gz"
+      $url = "https://go.dev/dl/$archive"
+      $dest = Join-Path $env:AGENT_TOOLSDIRECTORY "go-$version"
+      New-Item -ItemType Directory -Force -Path $dest | Out-Null
+      $tarPath = Join-Path $env:AGENT_TEMPDIRECTORY $archive
+      Invoke-WebRequest -Uri $url -OutFile $tarPath
+      & tar -C $dest -xzf $tarPath
+      $goBin = Join-Path $dest 'go/bin'
+    }
+    Write-Host "##vso[task.prependpath]$goBin"
+    Write-Host "Installed Go $version to $goBin"
+  displayName: 'Install Go 1.24.2'
+  # Skip on macOS: macOS-latest is arm64 (Apple Silicon). Mac jobs that need
+  # Go install it via Homebrew themselves (see test-e2e-osx.yml).
+  condition: ne(variables['Agent.OS'], 'Darwin')
@@ -1,4 +1,4 @@
-# Azure Functions CLI 4.11.1
+# Azure Functions CLI 4.12.0
 
 #### Host Version
 
@@ -11,3 +11,4 @@
 
 - Fix `HttpsProxyAgent is not a constructor` error in `install.js` when installing behind a proxy (https-proxy-agent v9 requires a named import).
 - Remove `azure-functions-core-tools` from the `devDependencies` of generated function app templates (`package-js.json`, `package-js-v4.json`, `package-ts.json`, `package-ts-v4.json`). Users get the CLI from their system install; pulling it in again via `npm install` doubled disk usage and made every project's install fragile to Core Tools postinstall regressions.
+- Add **preview** Go language support to `func init`, `func start`, `func pack`, and `func publish` (#4875, #4892, #4943). Behaviour, build/publish flags, and deployment layout may change before GA.