Use go.work and workspaces

[mvestnik]

You've chosen a very strange way to install it. The CLI is usually used for such tasks. Example: protoc-gen-go for gRPC.
But to simplify your method, you can use the go.work file.

go work init

Then you need to create the tools directory with tools.go. Then execute go mod init tools and go mod tidy.

Then do the same for the main space and include two workspaces in go.work.

go 1.21.0 

use (
    . 
    tools
) 

This is to separate the dependencies of the application and the generator.