Simon P. Couch

Related to tidymodels/tune#248! Some work starting to come together here.

Additional use case at https://community.rstudio.com/t/passing-other-recipe-roles-into-model-function/154793.

This may be a workflows or hardhat change rather than parsnip, but it might be worth looking out for indicative input in `add_formula()` or `add_recipe()` and warn if the formula...

`mtry = 1` is ambiguous, unfortunately.🙂

I mean `mtry`. If `mtry = 1`, it could be interpreted as a proportion, in which case all predictors are sampled, or it could be interpreted as a count, in...

Looks like this was resolved privately, so I will go ahead and close. For folks that come across this in the future, it is indeed possible to [register engine arguments...

Noting that `auto_ml()` with h2o is [now documented](https://parsnip.tidymodels.org/reference/details_auto_ml_h2o.html).

Ah, and [so is](https://parsnip.tidymodels.org/reference/details_linear_reg_glmer.html?q=linear_reg_glmer#null) `linear_reg()` with glmer. :)

As we haven't seen any further interest in the last few years, I'm going to go ahead and close. This does sound like a great idea for a parsnip extension...

Looks like we lost that info in #456; would be great to restore. May be worth considering at the same time as #954.