askpass assertthat base boot brew class cli clipr cluster codetools compiler cpp11 crayon curl datasets digest ellipsis evaluate fansi feather forcats foreign glue graphics grDevices grid haven highr hms httpuv jsonlite KernSmooth knitr later lattice lifecycle magrittr markdown MASS Matrix methods mgcv mime nlme nnet opencpu openssl pander parallel pillar pkgconfig promises protolite purrr R6 rappdirs Rcpp readr remotes rlang rpart spatial splines stats stats4 stringi stringr survival sys tcltk tibble tidyselect tools translations unix utf8 utils vctrs webutils xfun yaml zip