py/mpconfig.h: Add note that uio.resource_stream() is deprecated.
@@ -1187,6 +1187,12 @@ typedef double mp_float_t;
// Python" by prepocessing binary resources into Python source
// and bytecode-freezing it (with a simple helper module available
// e.g. in micropython-lib).
+// DEPRECATED: This function was added as an experiment, and remains
+// in the codebase only for further experimenting and research.
+// For production, use preprocessing and pure-Python loading approach
+// described above. While this adds preprocessing step, to use
+// uio.resource_stream() there's still an extra processing to
+// freeze some app files as FROZEN_MPY, while other - as FROZEN_STR.
#ifndef MICROPY_PY_IO_RESOURCE_STREAM
#define MICROPY_PY_IO_RESOURCE_STREAM (0)
#endif
