#Requires -Version 5.1$ErrorActionPreference = "Stop" $SCCACHE_VERSION = "v0.10.0"$SCCACHE_DIR = "./target/sccache" function Install-Sccache {    New-Item -ItemType Directory -Path $SCCACHE_DIR -Force | Out-Null     $sccachePath = Join-Path $SCCACHE_DIR "sccache.exe"     if (Test-Path $sccachePath) {        Write-Host "sccache already cached: $(& $sccachePath --version)"    }    else {        Write-Host "Installing sccache ${SCCACHE_VERSION} from GitHub releases..."         $arch = if ([Environment]::Is64BitOperatingSystem) { "x86_64" } else { "i686" }        $archive = "sccache-${SCCACHE_VERSION}-${arch}-pc-windows-msvc.zip"        $basename = "sccache-${SCCACHE_VERSION}-${arch}-pc-windows-msvc"        $url = "https://github.com/mozilla/sccache/releases/download/${SCCACHE_VERSION}/${archive}"         $tempDir = Join-Path $env:TEMP "sccache-install"        New-Item -ItemType Directory -Path $tempDir -Force | Out-Null         try {            $archivePath = Join-Path $tempDir $archive            Invoke-WebRequest -Uri $url -OutFile $archivePath            Expand-Archive -Path $archivePath -DestinationPath $tempDir             $extractedPath = Join-Path $tempDir $basename "sccache.exe"            Move-Item -Path $extractedPath -Destination $sccachePath -Force             Write-Host "Installed sccache: $(& $sccachePath --version)"        }        finally {            Remove-Item -Recurse -Force $tempDir -ErrorAction SilentlyContinue        }    }     $absolutePath = (Resolve-Path $SCCACHE_DIR).Path    if ($env:GITHUB_PATH) {        $absolutePath | Out-File -FilePath $env:GITHUB_PATH -Append -Encoding utf8    }    $env:PATH = "$absolutePath;$env:PATH"     # Verify sccache is available in PATH - fail fast if not    $sccacheCmd = Get-Command sccache -ErrorAction SilentlyContinue    if (-not $sccacheCmd) {        Write-Host "::error::sccache was installed but is not found in PATH"        Write-Host "PATH: $env:PATH"        Write-Host "Expected location: $absolutePath"        if (Test-Path (Join-Path $absolutePath "sccache.exe")) {            Write-Host "sccache.exe exists at expected location but is not in PATH"            Write-Host "Directory contents:"            Get-ChildItem $absolutePath | ForEach-Object { Write-Host "  $_" }        } else {            Write-Host "sccache.exe NOT found at expected location"        }        exit 1    }} function Configure-Sccache {    if (-not $env:R2_ACCOUNT_ID) {        Write-Host "R2_ACCOUNT_ID not set, skipping sccache configuration"        return    }     # Verify sccache is available before configuring    $sccacheCmd = Get-Command sccache -ErrorAction SilentlyContinue    if (-not $sccacheCmd) {        Write-Host "::error::sccache not found in PATH, cannot configure RUSTC_WRAPPER"        Write-Host "PATH: $env:PATH"        exit 1    }     Write-Host "Configuring sccache with Cloudflare R2..."     $bucket = if ($env:SCCACHE_BUCKET) { $env:SCCACHE_BUCKET } else { "sccache-zed" }    $keyPrefix = if ($env:SCCACHE_KEY_PREFIX) { $env:SCCACHE_KEY_PREFIX } else { "sccache/" }    $baseDir = if ($env:GITHUB_WORKSPACE) { $env:GITHUB_WORKSPACE } else { (Get-Location).Path }     # Use the absolute path to sccache binary for RUSTC_WRAPPER to avoid    # any PATH race conditions between GITHUB_PATH and GITHUB_ENV    $sccacheBin = (Get-Command sccache).Source     # Set in current process    $env:SCCACHE_ENDPOINT = "https://$($env:R2_ACCOUNT_ID).r2.cloudflarestorage.com"    $env:SCCACHE_BUCKET = $bucket    $env:SCCACHE_REGION = "auto"    $env:SCCACHE_S3_KEY_PREFIX = $keyPrefix    $env:SCCACHE_BASEDIR = $baseDir    $env:AWS_ACCESS_KEY_ID = $env:R2_ACCESS_KEY_ID    $env:AWS_SECRET_ACCESS_KEY = $env:R2_SECRET_ACCESS_KEY    $env:RUSTC_WRAPPER = $sccacheBin     # Also write to GITHUB_ENV for subsequent steps    if ($env:GITHUB_ENV) {        @(            "SCCACHE_ENDPOINT=$($env:SCCACHE_ENDPOINT)"            "SCCACHE_BUCKET=$($env:SCCACHE_BUCKET)"            "SCCACHE_REGION=$($env:SCCACHE_REGION)"            "SCCACHE_S3_KEY_PREFIX=$($env:SCCACHE_S3_KEY_PREFIX)"            "SCCACHE_BASEDIR=$($env:SCCACHE_BASEDIR)"            "AWS_ACCESS_KEY_ID=$($env:AWS_ACCESS_KEY_ID)"            "AWS_SECRET_ACCESS_KEY=$($env:AWS_SECRET_ACCESS_KEY)"            "RUSTC_WRAPPER=$($env:RUSTC_WRAPPER)"        ) | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8    }     Write-Host "✓ sccache configured with Cloudflare R2 (bucket: $bucket)"} function Show-Config {    Write-Host "=== sccache configuration ==="    Write-Host "sccache version: $(sccache --version)"    Write-Host "sccache path: $((Get-Command sccache).Source)"    Write-Host "RUSTC_WRAPPER: $($env:RUSTC_WRAPPER ?? '<not set>')"    Write-Host "SCCACHE_BUCKET: $($env:SCCACHE_BUCKET ?? '<not set>')"    Write-Host "SCCACHE_ENDPOINT: $($env:SCCACHE_ENDPOINT ?? '<not set>')"    Write-Host "SCCACHE_REGION: $($env:SCCACHE_REGION ?? '<not set>')"    Write-Host "SCCACHE_S3_KEY_PREFIX: $($env:SCCACHE_S3_KEY_PREFIX ?? '<not set>')"    Write-Host "SCCACHE_BASEDIR: $($env:SCCACHE_BASEDIR ?? '<not set>')"     if ($env:AWS_ACCESS_KEY_ID) {        Write-Host "AWS_ACCESS_KEY_ID: <set>"    }    else {        Write-Host "AWS_ACCESS_KEY_ID: <not set>"    }     if ($env:AWS_SECRET_ACCESS_KEY) {        Write-Host "AWS_SECRET_ACCESS_KEY: <set>"    }    else {        Write-Host "AWS_SECRET_ACCESS_KEY: <not set>"    }     Write-Host "=== sccache stats ==="    sccache --show-stats} Install-SccacheConfigure-SccacheShow-Config