zed editos gopackagesdriver.sh does not take effect

I am working on a multi-project setup, but configuring `tools/gopackagesdriver.sh` in the Zed editor isn't taking effect. Could you provide a more complete example or some documentation?

Start with tools/gopackagesdriver.sh and inspect how the Zed editor is expected to configure it for a multi-project workspace. Add a complete configuration example and explain how to verify that the setting takes effect; done means a newcomer can follow the documentation and use the driver successfully.

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