rhasspy-hermes-app

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Let the app load its intents/slots/… from a file and re-train Rhasspy on installation/startup of the app.

See https://github.com/rhasspy/rhasspy-hermes/issues/12

One thing to keep in mind with this is that it should only retrain when there was a change (either to the files or some other settings like e.g. the language) and not on each restart, since training can take very long when a lot of sentences need to be generated.

Good point. So we should compare the locally defined intents and slots with the ones known/trained by Rhasspy then, and only trigger Rhasspy to re-train when they differ?

I think it would be hard to compare them to the trained ones, since this would require generating them aswell. Reasons to retrain from the top of my head:

• rhasspy settings change that require a retrain
• skill files change
• probably when the skill has a new version aswell, since following something like #13 e.g. the skill name might have changed

One more thing is that when skills retrain by sending their intents + slots we do want them to do this at the same time. It would be a complete mess when:

• skill A sends the intents -> rhasspy starts to retrain
• skill B sends the intents -> rhasspy has to retrain again

I am currently not sure how to implement this in an optimal way.