Brad Fitzpatrick cccd5e93e9 tool: replace go.cmd with a 19KB Rust go.exe wrapper
go.cmd used cmd.exe to invoke PowerShell, which mangled arguments:
cmd.exe treats ^ as an escape character (so -run "^$" became -run "$",
running all tests instead of none) and = signs also caused issues in
the PowerShell→cmd.exe argument passing layer.

Replace it with a tiny no_std Rust binary (19KB, 32-bit x86 for
universal Windows compat: x86/x64/ARM64) that directly invokes the
Tailscale Go toolchain via CreateProcessW. The raw command line from
GetCommandLineW is passed through to CreateProcessW with only argv[0]
replaced, so arguments are never parsed or re-escaped.

The binary also handles first-run toolchain download natively using
curl.exe and tar.exe (both ship with Windows 10+), so PowerShell is
no longer required for normal operation. The PowerShell fallback is
only used for the rare TS_USE_GOCROSS=1 path.

PowerShell prefers go.exe over go.cmd when resolving ./tool/go, so
this is a drop-in replacement.

With go.exe in place, the CI can use the natural -bench=. -benchtime=1x
-run="^$" flags directly.

Also removes tool/go-win.ps1 which is now unused.

Updates #19255

Change-Id: I80da23285b74796e7694b89cff29a9fa0eaa6281
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2026-04-06 20:26:43 +00:00
2026-03-30 12:34:26 -07:00
2026-03-27 08:41:33 +00:00
2026-01-27 16:15:17 -08:00
2026-03-16 13:51:04 -07:00
2026-03-16 13:51:04 -07:00
2026-03-06 11:27:29 -08:00

Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

This repository contains the majority of Tailscale's open source code. Notably, it includes the tailscaled daemon and the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows, macOS, and to varying degrees on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's code, but this repo doesn't contain the mobile GUI code.

Other Tailscale repos of note:

For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.

Using

We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.

Other clients

The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.

Building

We always require the latest Go release, currently Go 1.26. (While we build releases with our Go fork, its use is not required.)

go install tailscale.com/cmd/tailscale{,d}

If you're packaging Tailscale for distribution, use build_dist.sh instead, to burn commit IDs and version info into the binaries:

./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled

If your distro has conventions that preclude the use of build_dist.sh, please do the equivalent of what it does in your distro's way, so that bug reports contain useful version information.

Bugs

Please file any issues about this code or the hosted service on the issue tracker.

Contributing

PRs welcome! But please file bugs. Commit messages should reference bugs.

We require Developer Certificate of Origin Signed-off-by lines in commits.

See commit-messages.md (or skim git log) for our commit message style.

About Us

Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:

WireGuard is a registered trademark of Jason A. Donenfeld.

Description
The easiest, most secure way to use WireGuard and 2FA.
Readme BSD-3-Clause 140 MiB
Languages
Go 95.6%
C 1.7%
TypeScript 1.1%
Shell 0.6%
Swift 0.3%
Other 0.4%