Interesting, this includes a new feature branch, msvc-depfile. We will loose this new addition upgrading to 1.13.0.

I just shared feedback with the CMake team explaining the situation.

In a nutshell, I mentioned it would be ideal to update the Kitware fork based of version 1.13 while also integrating the following features:

• make-4.3-jobserver-1: Based on this release, which includes pipe-based jobserver support for Make 4.3 and was conveniently created by the same developer who upstreamed jobserver support
• msvcdepfile-1: Adds Windows-specific support for parsing MSVC dependency files. See PR #2600

I will follow-up once we discussed it and settle on a path forward.

The PR for msvcdepfile-1 has been closed for now and is not in the new 1.13.0 tag in Kitware fork.
I guess we should go with 1.13.0 and make-4.3-jobserver-1 only from the Kitware fork ?

Ditto. Here is what we discussed with @bradking

I'm actually inclined to drop that from our fork [...] but the motivating use case was addressed another way, and the corresponding changes to cmake were never merged. After discussion in https://github.com/ninja-build/ninja/issues/1806#issuecomment-2971607874 on the upstream Ninja side [...] it is unlikely they will ever accept the feature.

Switching to the updated Kitware fork with the backported classic job server is then a sensible path forward.

The test failing on Windows seems to be coming from the jobserver patch in Kitware fork which does not make the test expected result depend on the platform: Kitware/ninja@8879a03#diff-4a3129d062b73d6f6436e3d4e5e3f41bbb848ef49cce54309fe6a00b6f93d132

c.f. Kitware/ninja#3