Windows CI seems to be broken on newer versions of Mill (500USD)

[lihaoyi]

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From the maintainer Li Haoyi: I'm putting a 500USD bounty on this issue, payable by bank transfer on a merged PR implementing this.

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Ever since 126f574, the various Windows CI jobs seem to be finishing in ~1min, rather than the 10-30min they used to. Something's probably wrong and they're not actually testing anything. We should figure out what, fix it, and ensure Windows CI is able to pass on the current latest version of Mill built from HEAD

[lefou]

This PR only fixed the Windows batch script but doesn't raise the Mill version, yet it shows the same test failure:

• Fix ci/mill.bat typo #3284

We should compare the two binary sources Github releases and Maven Central as well as the batch script mill.bat which is a copy of https://github.com/lefou/millw.

[lefou]

• Update mill.bat script including some fixes #3285
• Fix AssemblyTests on Windows #3288
• Fix MillPluginClasspathTest on Windows #3290
• Fix SubprocessStdoutTests on Windows #3289
• contrib bloob tests fail
• Try to fix windows tests #3322

[lihaoyi]

Going to call this done. @sake92 since you made 2/4 of the fix PRs, I can pay out a proportionate amount of the bounty. Email me ([email protected]) your bank transfer details and I'll wire it over

[sake92]

@lihaoyi thanks! I've sent you an email.