Lua scripts that uses darktable-cli to apply the xmp file at the time of exporting into a file and then applies the denoising algorithms (nind-denoise).
So, I was thinking, use the neural module to do a preview of the image, save that configuration but only gets applied when the file is being exported (like other modules gets applied when exported to a file, right??).
I did like the original way of exporting denoised file to jpg using the darktable-cli. Only problem was the missing preview before application.