"wazero")
		exec wazero run -mount /:/ -env-inherit -cachedir "${TMPDIR:-/tmp}"/wazero ${GOWASIRUNTIMEARGS:-} "$1" "${@:2}"
		;;
	"wasmtime" | "")
		exec wasmtime run --dir=/ --env PWD="$PWD" --env PATH="$PATH" -W max-wasm-stack=1048576 ${GOWASIRUNTIMEARGS:-} "$1" "${@:2}"
		;;
	*)
		echo "Unknown Go WASI runtime specified: $GOWASIRUNTIME"
		exit 1
		;;

			s.Sources[src].Places = append(s.Sources[src].Places, StackSlot{i, j})
		}
	}
}

func (s *StackSet) assignColors() {
	// Assign different color indices to different packages.
	const numColors = 1048576
	for i, src := range s.Sources {
		pkg := packageName(src.FullName)
		h := sha256.Sum256([]byte(pkg))
		index := binary.LittleEndian.Uint32(h[:])
		s.Sources[i].Color = int(index % numColors)
	}