Was accidentally pinned to the locally installed toolchain's exact version
(1.26.5), which broke CI on runners with an older Go. Nothing in the code
needs anything newer than 1.23.
A single-binary Go tool for cross compiling with the real MSVC toolchain
on Linux via Wine. Behaves as cl/link/lib/rc/midl/mt/dumpbin/msbuild/
nmake/ml/ml64/armasm/armasm64/cmd/findstr depending on the name it's
invoked as, plus download/install/env/version management subcommands.
- download: fetches the MSVC/WinSDK installer manifest, resolves package
selection and dependencies, downloads and verifies payloads, unpacks
VSIX/MSI packages, and applies a handful of compatibility patches so
VsDevCmd.bat and MSBuild's SDK detection work without a Windows
Registry (which doesn't exist under Wine).
- install: locates the installed toolchain/SDK versions, normalizes
header/library name casing, lays out per-architecture tool symlinks
with an env.json config each, and compiles a small native launcher
(toolrelay.exe) that lets mt.exe's CMake-compatibility exit code
survive Wine's own exit-code truncation.
- The wrapper runtime rewrites absolute unix paths in tool arguments into
Wine's z:\... form, runs the real .exe under wine, and rewrites the
tool's output back to plain unix paths.
Verified end-to-end against a real MSVC/WinSDK download: cl, link, mt and
the resulting hello.exe all work under Wine, including through the
toolrelay.exe relay path and with paths containing non-ASCII characters.
Offline unit tests cover the wrapper's path-rewrite/output-filter logic,
install-time header lowercasing, and download package-selection/
dependency-resolution.
Cheviiot