Skip frontend packages install if previously done

[jackie-pc]

We introduce a decorator @cached_procedure for this functionality. "Procedure" because we are not caching any results, only the inputs to a previous call. It is up to the decoratee to ensure its args capture the unique call under cache sufficiently.

[masenf]

as i'm reading it, this will also result in frontend packages not being installed for export and run --env prod if the packages have already been installed.

seems the only way to get package installation to occur now is to change something in the app the requires a different set of packages, or re-init the project.

[jackie-pc]

Is it necessary or desirable to perform real frontend install steps under those conditions? It's really a case of capturing all such requirements in the cache payload (e.g. by including them as args to the function and rolling it into the payload_fn).

[masenf]

Is it necessary or desirable to perform real frontend install steps under those conditions?

i dont think it's necessary, just a potentially notable change in how those commands work.

i mark approve, i think we should take it; but also note in the docs that if you want to actually reinstall packages to use reflex init first.