Make test-deployment-bare run on Windows

[tomgr]

This uses the WinFSP-based VFS implementation.

[tomgr]

Just a draft for now as I'd like to see how it gets on with the CI here!

[moroten]

Impressive work!

[stagnation]

🎉

[moroten]

(Removing "request changes" to try to get CI to run.)

[tomgr]

I think this is now ready. I got caught out by the github actions windows environment. To cut a long story short, it turns out that sending an interrupt on Windows (which is CTRL_C_EVENT under the hood) requires a console environment. I tried many different ways of creating a console but in the end the only way I found of creating a console environment that was good enough to send a ctrl+c was to use conhost.exe directly to create a console. See tools/run-with-console.ps1.

Graceful termination on Windows is a bit of a disaster zone.

[moroten]

Something is not working properly. The Buildbarn deployments exits early and the Bazel build reports exit code 34, but still the Github Workflow succeeds.

[tomgr]

Thanks for spotting that. I think there's two issues:

1. conhost.exe doesn't propagate the exit code. I've worked around that by writing the exit code to a file.
2. Buildbarn hadn't restarted by the time the second build started. I've added a sleep to let it start before re-executing bazel.

[tomgr]

The exit code propagation now works correctly (I added a exit 1 at the end of the script on a branch just to test): https://github.com/tomgr/bb-deployments/actions/runs/17308199155/job/49136347413?pr=3

[moroten]

@tomgr Thank you very much for your excellent work and this contribution!

[stagnation]

Hooray!