This packages provides essential learners for mlr3.

Implemented learners

Learner Package Classification Regression
Linear / Logistic Regression stats x x
Penalized Regression glmnet x x
kNN kknn x x
Naive Bayes e1071 x -
SVM e1071 x x
Random Forest ranger x x
Boosting xgboost x x
Kriging DiceKriging - x
LDA MASS x -
QDA MASS x x

Creating custom learners is covered in the mlr3book.