I can't open hp printer device with gousb about gousb HOT 7 CLOSED

If error is nil, that means *Device is not nil.

This is not true according to https://pkg.go.dev/github.com/google/gousb#Context.OpenDeviceWithVIDPID

If none is found, it returns nil and nil error.

indeed, my bad, you're absolutely right. It may return (nil, nil) if no device is found.

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The return values of OpenDeviceWithVIDPID are a *Device pointer and an error. If error is nil, that means *Device is not nil.

I don't know what you mean when you say it returns "Failed to compute node presentation", please be more specific.,

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This seems to be working as intended. You got back two devices. The "Failed to compute" is not an error, it's coming from your IDE.

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I use macos, the result is

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If error is nil, that means *Device is not nil.

This is not true according to https://pkg.go.dev/github.com/google/gousb#Context.OpenDeviceWithVIDPID

If none is found, it returns nil and nil error.

(sorry for necrobumping)

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