Embedding cozo wasm into other language.

[CrowdHailer]

I've been trying to embed cozo-lib-wasm into go. I want some isolation protection and so have chosen this approach over using C.

I'm trying to follow these instructions but no luck yet. https://eli.thegreenplace.net/2023/faas-in-go-with-wasm-wasi-and-rust/. How do I reference the functions in the wasm module in go?

I have also tried following the wazero docs to the point where I have, the following.

package main

import (
	"context"
	_ "embed"
	"fmt"
	"log"

	"github.com/tetratelabs/wazero"
	"github.com/tetratelabs/wazero/imports/wasi_snapshot_preview1"
)

//go:embed cozo_lib_wasm_bg.wasm
var addWasm []byte

func main() {
	fmt.Println(len(addWasm))

	ctx := context.Background()

	// Create a new WebAssembly Runtime.
	r := wazero.NewRuntime(ctx)
	defer r.Close(ctx) // This closes everything this Runtime created.

	// Instantiate WASI, which implements host functions needed for TinyGo to
	// implement `panic`.
	wasi_snapshot_preview1.MustInstantiate(ctx, r)

	// wazero.NewModuleConfig().
	mod, err := r.Instantiate(ctx, addWasm)
	// fmt.Println(mod.ExportedFunctionDefinitions())
	if err != nil {
		log.Panicf("failed to instantiate module: %v", err)
	}

	add := mod.ExportedFunction("add")
	results, err := add.Call(ctx, 1, 2)
	if err != nil {
		log.Panicf("failed to call add: %v", err)
	}
	fmt.Println(results)
}

However instantiation fails with the following error.
panic: failed to instantiate module: module[wbg] not instantiated

Is wbg a module from cozo, or something I should know as a general wasm requirement