fix windows hard links

[patricklx]

Windows has a limit of 1024 hard links per file . So this can fail quickly. Considering that pnpm also uses hard links. Apparently it can also fail for unknown reasons 🤷‍♂️.
We never encountered it before, because on windows in github actions tmp is always on C drive, while the CWD is on D drive...
and hard links are not permitted cross device.

this changes it to the same behaviour pnpm has https://github.com/pnpm/pnpm/blob/6e031e7428b3e46fc093f47a5702ac8510703a91/fs/indexed-pkg-importer/src/index.ts#L190

[mansona]

So this isn't quite the exact same as what PNPM is doing 🤔 this is opting out of hard-linking for all following files once we get one error, whereas pnpm is allowing a fallback for one file. I wonder if we just added this as a fallback and removed the concept of this.usingHardLinks if the code would be better?

I agree that something around this line has to change, when I'm debugging things on Windows I invariably have to remove this throw and let it copy the file(s)

[patricklx]

So this isn't quite the exact same as what PNPM is doing 🤔 this is opting out of hard-linking for all following files once we get one error, whereas pnpm is allowing a fallback for one file. I wonder if we just added this as a fallback and removed the concept of this.usingHardLinks if the code would be better?

I agree that something around this line has to change, when I'm debugging things on Windows I invariably have to remove this throw and let it copy the file(s)

That was the behaviour before. With this change it only opts out if the error is exdev, cross device. Which will never work for any other file then.