Process and print 'UTF-8' encoded international
    text (Unicode). Input, validate, normalize, encode, format, and
    display.

cli, covr, knitr, rlang, rmarkdown, testthat (>= 3.0.0),
withr

Patrick O. Perry [aut, cph],
  Kirill Müller [cre],
  Unicode, Inc. [cph, dtc] (Unicode Character Database)

Functions for Base Types and Core R and 'Tidyverse' Features

A toolbox for working with base types, core R features
  like the condition system, and core 'Tidyverse' features like tidy
  evaluation.

c(
    person("Lionel", "Henry", ,"lionel@rstudio.com", c("aut", "cre")),
    person("Hadley", "Wickham", ,"hadley@rstudio.com", "aut"),
    person(given = "mikefc",
           email = "mikefc@coolbutuseless.com", 
           role = "cph", 
           comment = "Hash implementation based on Mike's xxhashlite"),
    person(given = "Yann",
           family = "Collet",
           role = "cph", 
           comment = "Author of the embedded xxHash library"),
    person(given = "RStudio", role = c("cph", "fnd"))
    )

cli (>= 3.1.0), covr, crayon, fs, glue, knitr, magrittr,
methods, pillar, rmarkdown, stats, testthat (>= 3.0.0), tibble,
usethis, vctrs (>= 0.2.3), withr

Lionel Henry [aut, cre],
  Hadley Wickham [aut],
  mikefc [cph] (Hash implementation based on Mike's xxhashlite),
  Yann Collet [cph] (Author of the embedded xxHash library),
  RStudio [cph, fnd]

c(
    person("Hadley", "Wickham", role = "aut"),
    person("Jim", "Hester", role = "aut"),
    person("Gábor", "Csárdi", , "csardi.gabor@gmail.com", role = c("aut", "cre")),
    person("RStudio", role = c("cph", "fnd"))
  )

Provides functions used to build R packages. Locates
    compilers needed to build R packages on various platforms and ensures
    the PATH is configured appropriately so R can use them.

callr (>= 3.2.0), cli (>= 3.4.0), crayon, desc, prettyunits,
processx, R6, rprojroot, withr (>= 2.3.0)

covr, cpp11, knitr, mockery, Rcpp, rmarkdown, testthat (>=
3.0.0)

Hadley Wickham [aut],
  Jim Hester [aut],
  Gábor Csárdi [aut, cre],
  RStudio [cph, fnd]