Cheviiot f6b9a0811a Prevent and recover from wedged Wine-hosted processes
Prompted by a real incident: an MSBuild node-reuse worker (its own
/nodeReuse:true default) survived a build getting interrupted, came
back deadlocked, and got reused by the next `msbuild` invocation -
which then failed with a confusing, unrelated-looking
`System.TypeLoadException` on Microsoft.VisualStudio.Telemetry on
every call for hours, until the stale process was killed by hand.
That's exactly the "unrelated blocker" noted in this repo's own
earlier session notes (CLAUDE.md) while debugging a real project's
build - it wasn't a missing dependency, it was a corrupted reused
process.

Two changes:

- vintner now forces /nodeReuse:false on every msbuild invocation
  (unless the caller already passed their own /nodeReuse or /nr
  switch), so a wedged worker can never poison a later, unrelated
  build in the first place. Costs each invocation the couple-hundred-
  ms/node startup time node reuse exists to save.

- VINTNER_TIMEOUT (a duration string, e.g. "30m") bounds how long any
  single tool invocation is allowed to run, for the case something
  wedges that isn't MSBuild-specific. Every exec.Command site in
  internal/wrapper now goes through a shared newToolCommand
  constructor that, when the timeout is set, kills the *whole*
  process group (not just the immediate `wine` process - a wedged
  child surviving under it is exactly the scenario this needs to
  reach) via a context deadline, and reports a clear "timed out after
  Xm" message (exit 124, matching the timeout(1) convention) instead
  of a bare "signal: killed". Unset by default - every real build
  observed stays unbounded, matching Windows' own behavior.

Verified end-to-end, not just at the unit level: a real `sleep 30`
through the `cmd` native wrapper with VINTNER_TIMEOUT=1s was killed
within the deadline and reported the timeout clearly (exit 124); a
real `cl` invocation with the same 1s timeout finished normally
(0.26s) without being mistaken for a hang.
2026-07-25 15:58:22 +10:00
2026-07-25 03:55:22 +10:00
2026-07-25 03:55:22 +10:00
2026-07-25 03:55:22 +10:00

vintner

CI Release License: MIT

vintner cross-compiles with the real MSVC toolchain on Linux, using Wine. One Go binary drops in as cl, link, lib, rc, midl, mc, mt, dumpbin, msbuild, nmake, ml, ml64, armasm, armasm64, plus cmd/findstr shims, so once installed you invoke the real Microsoft tools exactly like on Windows. It handles full MSBuild projects, with --with-wdk real KMDF/UMDF Windows drivers, and with --with-dxsdk the real D3DX9 headers/libs.

Inspired by mstorsjo/msvc-wine's approach: download the real MSVC/WinSDK, wrap the compiler under Wine.

Contents

How it works

vintner is a multi-call binary, like busybox: it behaves differently depending on the name it's invoked as.

  • As cl, link, lib, and the rest: it loads a per-architecture env.json, sets INCLUDE/LIB/WINEPATH, and rewrites absolute Unix paths in the arguments to Wine's z:\... form (Wine and cl.exe otherwise mishandle relative includes — see winehq bug 55200). It then runs the real .exe under wine/wine64, and rewrites z:\... paths back to Unix paths in the output, so your build system's error parsing keeps working.
  • As vintner: it exposes the download, install, env, version and completion subcommands below (short aliases: dl, i, e, v; help/h prints usage).

Installation

On ALT Linux, via Nivora:

stplr install nivora/vintner

Prebuilt binary, from the latest release:

curl -fLo vintner "https://github.com/Cheviiot/vintner/releases/latest/download/vintner-linux-$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/')"
chmod +x vintner
sudo install vintner /usr/local/bin/vintner

From source: see Building from source.

Either way, wine/wine64, msitools (for msiextract) and git need to be on PATH at run time. Nivora installs pull these in automatically as package dependencies.

Prerequisites

  • wine (or wine64) — runs the real cl.exe/link.exe/etc.
  • msitools (msiextract) — unpacks the .msi payloads MSVC/WinSDK ship as.
  • git — applies the compatibility patches bundled with download (see Compatibility patches).
  • cabextract — only needed for download --with-dxsdk (see Building against D3DX9).

On ALT Linux:

pkcon install wine msitools git cabextract

Quick start

# 1. Download and unpack MSVC + Windows SDK into ~/.vintner (accepts
#    Microsoft's Visual Studio Build Tools license). Pass --dest <dir>
#    for a different location.
vintner download --accept-license

# 2. Wire up the tool wrappers
vintner install

# 3. Add the toolchain to PATH and build
export PATH=~/.vintner/bin/x64:$PATH
cl /nologo /EHsc hello.cpp

Commands

vintner download (dl) --accept-license [--dest <dir>] [options]   fetch and unpack MSVC/WinSDK/WDK
vintner install (i) [dir]                                         wire up wrappers for a downloaded MSVC
vintner env (e) --bin <dir>/bin/<arch>                            print INCLUDE/LIB for native clang-cl/lld-link use
vintner version (v)                                               print the version
vintner help (h)                                                  print usage
vintner completion bash|zsh                                       print a shell completion script

--dest/[dir] both default to ~/.vintner when omitted.

download's main options: --msvc-version, --sdk-version, --architecture (repeatable: x86/x64/arm/arm64/host), --host-arch, --only-host, --with-wdk (see below), --with-dxsdk (see below), --ignore (repeatable), --only-download, --only-unpack, --keep-unpack, --skip-patch, --cache, --language, --include-optional, --skip-recommended, --major, --preview, --manifest, --list-workloads, --list-components, --print-deps-tree. Run vintner download -h for the full list with descriptions.

--list-workloads/--list-components print every workload/component id and its human-readable title from the fetched manifest, then exit without downloading anything. Useful for finding what to pass as a bare package id or through --with-*. --print-deps-tree prints the dependency tree of whatever would actually be selected — honoring every other flag — without downloading anything.

Building drivers (WDK)

--with-wdk also fetches the Windows Driver Kit: headers, import libs, and the MSBuild WindowsKernelModeDriver10.0/WindowsUserModeDriver10.0 PlatformToolsets.

vintner download --accept-license --with-wdk

With it, msbuild builds real KMDF/UMDF drivers — compiling, linking, INF stamping, and the Inf2Cat signability check (SignMode=off) all work under Wine. Tested against a real sample driver from microsoft/Windows-driver-samples. Only x64 and arm64 targets have a WDK package upstream; there's no x86 or arm one.

Building against D3DX9 (DirectX SDK)

--with-dxsdk fetches the DirectX SDK (June 2010) — the last standalone release of D3DX9/10/11, XInput and XAudio2, dropped from the Windows SDK entirely once D3DX was deprecated. It unpacks the real headers and x86/x64 import libs (d3dx9.h/d3dx9.lib included) to <dest>/DXSDK.

vintner download --accept-license --with-dxsdk

Point your project's IncludePath/LibraryPath at <dest>/DXSDK/Include and <dest>/DXSDK/Lib/x86 or <dest>/DXSDK/Lib/x64. Requires cabextract on PATH (the installer is a self-extracting CAB archive).

Automated/scripted builds

Every tool invocation runs unbounded by default, same as the real thing on Windows. Set VINTNER_TIMEOUT (a time.ParseDuration string, e.g. 30m, 2h) to have vintner kill and fail a build that runs longer than that instead of hanging forever - meant for CI and other unattended callers, not interactive use. This guards against one confirmed failure mode: an MSBuild node-reuse worker (/nodeReuse:true is MSBuild's own default) can survive its parent process under Wine and, if a prior build was interrupted mid-compile, come back wedged - reused by the next msbuild call and failing every subsequent build with a confusing, unrelated-looking error, indefinitely, until it's killed by hand. vintner already forces /nodeReuse:false on every msbuild invocation to prevent this in the first place; VINTNER_TIMEOUT is the backstop for whatever else might wedge under Wine that isn't MSBuild-specific.

VINTNER_TIMEOUT=30m msbuild MyProject.sln

Language

CLI text (usage, progress lines, prompts) defaults to English. Set VINTNER_LANG=ru (or a ru-prefixed LC_ALL/LC_MESSAGES/LANG, e.g. ru_RU.UTF-8) for Russian:

VINTNER_LANG=ru vintner help

Error text from internal packages stays in English regardless.

Shell completion

Already set up if you installed via Nivora. Otherwise:

source <(vintner completion bash)   # or add to ~/.bashrc
source <(vintner completion zsh)    # or add to ~/.zshrc

Completes subcommands, including the short aliases, download's flags, and directory arguments for install/env --bin.

The MSVC/WinSDK headers and libraries work directly with Clang/LLD in MSVC-compatible mode. No Wine needed:

eval "$(vintner env --bin ~/.vintner/bin/x64)"
clang-cl -c hello.c
lld-link hello.obj -out:hello.exe

toolrelay.exe

install compiles assets/vendor/toolrelay.cpp, a small native Windows launcher, with the freshly-installed host-arch cl.exe. This is best-effort: if wine isn't available yet, or the compile fails, install still succeeds, and tool invocations just skip it. When present, every non-MSBuild tool call is routed through it via two named FIFOs.

That's what lets mt.exe's CMake-compatibility exit code (0x410200010xbb) survive Wine's own exit-code truncation: a native Windows process can read the real 32-bit exit code via GetExitCodeProcess() before Wine collapses it to a single byte on the way back to Unix.

Compatibility patches

download applies a few small patches (assets/patches) to the downloaded MSVC/WinSDK tree, so VsDevCmd.bat and MSBuild's SDK-detection props work without a Windows Registry, which doesn't exist under Wine. They look up the SDK directly under the VS install root instead of querying the registry, skip telemetry, and don't fail devcmd setup when an optional component (ConnectionManagerExe, bundled CMake/Ninja) is missing.

Building from source

go build -o vintner ./cmd/vintner
go vet ./...
go test ./...

Go 1.23+ builds it. wine/msitools are only needed at run time, for install/tool invocation and download respectively.

License

MIT (see LICENSE.txt) for vintner's own source. The MSVC Build Tools, Windows SDK, and WDK that download fetches stay under Microsoft's own license (accepted via --accept-license), same as with any other way of obtaining them.

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Cross compile with MSVC on Linux via Wine
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