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go.cmd lets you run just "./tool/go" on Windows the same as Linux/Darwin. The batch script (go.md) then just invokes PowerShell which is more powerful than batch. I wanted this while debugging Windows CI performance by reproducing slow tests on my local Windows laptop. Updates tailscale/corp#28679 Change-Id: I6e520968da3cef3032091c1c4f4237f663cefcab Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
65 lines
2.2 KiB
PowerShell
65 lines
2.2 KiB
PowerShell
<#
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go.ps1 – Tailscale Go toolchain fetching wrapper for Windows/PowerShell
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• Reads go.toolchain.rev one dir above this script
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• If the requested commit hash isn't cached, downloads and unpacks
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https://github.com/tailscale/go/releases/download/build-${REV}/${OS}-${ARCH}.tar.gz
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• Finally execs the toolchain's "go" binary, forwarding all args & exit-code
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#>
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param(
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[Parameter(ValueFromRemainingArguments = $true)]
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[string[]] $Args
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)
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Set-StrictMode -Version Latest
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$ErrorActionPreference = 'Stop'
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if ($env:CI -eq 'true' -and $env:NODEBUG -ne 'true') {
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$VerbosePreference = 'Continue'
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}
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$repoRoot = Resolve-Path (Join-Path $PSScriptRoot '..')
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$REV = (Get-Content (Join-Path $repoRoot 'go.toolchain.rev') -Raw).Trim()
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if ([IO.Path]::IsPathRooted($REV)) {
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$toolchain = $REV
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} else {
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if (-not [string]::IsNullOrWhiteSpace($env:TSGO_CACHE_ROOT)) {
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$cacheRoot = $env:TSGO_CACHE_ROOT
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} else {
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$cacheRoot = Join-Path $env:USERPROFILE '.cache\tsgo'
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}
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$toolchain = Join-Path $cacheRoot $REV
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$marker = "$toolchain.extracted"
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if (-not (Test-Path $marker)) {
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Write-Host "# Downloading Go toolchain $REV" -ForegroundColor Cyan
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if (Test-Path $toolchain) { Remove-Item -Recurse -Force $toolchain }
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# Removing the marker file again (even though it shouldn't still exist)
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# because the equivalent Bash script also does so (to guard against
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# concurrent cache fills?).
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# TODO(bradfitz): remove this and add some proper locking instead?
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if (Test-Path $marker ) { Remove-Item -Force $marker }
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New-Item -ItemType Directory -Path $cacheRoot -Force | Out-Null
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$url = "https://github.com/tailscale/go/releases/download/build-$REV/windows-amd64.tar.gz"
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$tgz = "$toolchain.tar.gz"
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Invoke-WebRequest -Uri $url -OutFile $tgz -UseBasicParsing -ErrorAction Stop
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New-Item -ItemType Directory -Path $toolchain -Force | Out-Null
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tar --strip-components=1 -xzf $tgz -C $toolchain
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Remove-Item $tgz
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Set-Content -Path $marker -Value $REV
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}
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}
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$goExe = Join-Path $toolchain 'bin\go.exe'
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if (-not (Test-Path $goExe)) { throw "go executable not found at $goExe" }
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& $goExe @Args
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exit $LASTEXITCODE
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