Error: Can't create GLFW window (in macOS GitHub Actions, works fine in Linux)

[node-3d]

Error: Can't create GLFW window (in macOS GitHub Actions, works fine in Linux)

[raub]

Well that's because GitHub Actions are run on headless environments that don't even know what's a "window" anyway. Therefore you can't create one.

I guess your tests work on Ubuntu because they have enabled something like XVFB by default. I've previously set it up manually on Travis, and now on GitHub I also use XVFB action. Here's my example: https://github.com/node-3d/glfw-raub/blob/master/.github/workflows/validate.yml#L33 - although it may be not needed anymore, as you have the tests working without it.

I don't know of a similar solution for OSX. So, probably, the only way is a self-hosted runner on a real machine. If you can afford dedicating it.

On Windows, the solution might be something like this library: https://fdossena.com/?p=mesa/index.frag - however, there is no straightforward way to use it. For now, I decided to stick with the working Ubuntu runs. If you have any luck with the other platforms, it would be interesting to see.