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<https://www.pulumi.com/docs/intro/concepts/function-serialization/#capturing-modules-in-a-javascript-function>

This seems to suggest that the import from `child_process` should just be serialized into an import on the server, no?
```For the reasons cited previously, modules are captured in a special but intuitive fashion. When a module is captured in code, it is translated into an idiomatic require call in the serialized JavaScript code.```

```This form of module capturing only applies to external modules that are referenced, such as modules that are directly part of Node, or are in the node_modules directory.```


ahh, bah... I moved the
`const execFile = promisify(execFileReal);` into the callback, and that fixed it