usethis is a workflow package: it automates repetitive tasks that arise during project setup and development, both for R packages and non-package projects.
Install the released version of usethis from CRAN:
install.packages("usethis")Or install the development version from GitHub with:
# install.packages("devtools")
devtools::install_github("r-lib/usethis")Most use_*() functions operate on the active project: literally, a
directory on your computer. If you’ve just used usethis to create a new
package or project, that will be the active project. Otherwise, usethis
verifies that current working directory is or is below a valid project
directory and that becomes the active project. Use proj_get() or
proj_sitrep() to manually query the project and read more in the
docs.
A few usethis functions have no strong connections to projects and will expect you to provide a path.
usethis is quite chatty, explaining what it’s doing and assigning you
tasks. ✔ indicates something usethis has done for you. ● indicates
that you’ll need to do some work yourself.
Below is a quick look at how usethis can help to set up a package. But remember, many usethis functions are also applicable to analytical projects that are not packages.
library(usethis)
# Create a new package -------------------------------------------------
path <- file.path(tempdir(), "mypkg")
create_package(path)
#> ✔ Creating '/var/folders/yx/3p5dt4jj1019st0x90vhm9rr0000gn/T/RtmpWNMVxG/mypkg/'
#> ✔ Setting active project to '/private/var/folders/yx/3p5dt4jj1019st0x90vhm9rr0000gn/T/RtmpWNMVxG/mypkg'
#> ✔ Creating 'R/'
#> ✔ Writing 'DESCRIPTION'
#> Package: mypkg
#> Title: What the Package Does (One Line, Title Case)
#> Version: 0.0.0.9000
#> Authors@R (parsed):
#> * First Last <[email protected]> [aut, cre] (<https://orcid.org/YOUR-ORCID-ID>)
#> Description: What the package does (one paragraph).
#> License: What license it uses
#> Encoding: UTF-8
#> LazyData: true
#> ✔ Writing 'NAMESPACE'
#> ✔ Setting active project to '<no active project>'
# only needed since this session isn't interactive
proj_activate(path)
#> ✔ Changing working directory to '/var/folders/yx/3p5dt4jj1019st0x90vhm9rr0000gn/T/RtmpWNMVxG/mypkg/'
#> ✔ Setting active project to '/private/var/folders/yx/3p5dt4jj1019st0x90vhm9rr0000gn/T/RtmpWNMVxG/mypkg'
# Modify the description ----------------------------------------------
use_mit_license("My Name")
#> ✔ Setting License field in DESCRIPTION to 'MIT + file LICENSE'
#> ✔ Writing 'LICENSE.md'
#> ✔ Adding '^LICENSE\\.md$' to '.Rbuildignore'
#> ✔ Writing 'LICENSE'
use_package("MASS", "Suggests")
#> ✔ Adding 'MASS' to Suggests field in DESCRIPTION
#> ● Use `requireNamespace("MASS", quietly = TRUE)` to test if package is installed
#> ● Then directly refer to functons like `MASS::fun()` (replacing `fun()`).
# Set up various packages ---------------------------------------------
use_roxygen_md()
#> ✔ Setting Roxygen field in DESCRIPTION to 'list(markdown = TRUE)'
#> ✔ Setting RoxygenNote field in DESCRIPTION to '6.1.1'
#> ● Run `devtools::document()`
use_rcpp()
#> ✔ Creating 'src/'
#> ✔ Adding '*.o', '*.so', '*.dll' to 'src/.gitignore'
#> ● Copy and paste the following lines into '/private/var/folders/yx/3p5dt4jj1019st0x90vhm9rr0000gn/T/RtmpWNMVxG/mypkg/R/mypkg-package.R':
#> ## usethis namespace: start
#> #' @useDynLib mypkg, .registration = TRUE
#> ## usethis namespace: end
#> NULL
#> ✔ Adding 'Rcpp' to LinkingTo field in DESCRIPTION
#> ✔ Adding 'Rcpp' to Imports field in DESCRIPTION
#> ● Copy and paste the following lines into '/private/var/folders/yx/3p5dt4jj1019st0x90vhm9rr0000gn/T/RtmpWNMVxG/mypkg/R/mypkg-package.R':
#> ## usethis namespace: start
#> #' @importFrom Rcpp sourceCpp
#> ## usethis namespace: end
#> NULL
use_revdep()
#> ✔ Creating 'revdep/'
#> ✔ Adding '^revdep$' to '.Rbuildignore'
#> ✔ Adding 'checks', 'library', 'checks.noindex', 'library.noindex', 'data.sqlite', '*.html' to 'revdep/.gitignore'
#> ✔ Writing 'revdep/email.yml'
#> ● Run checks with `revdepcheck::revdep_check(num_workers = 4)`
# Set up other files -------------------------------------------------
use_readme_md()
#> ✔ Writing 'README.md'
use_news_md()
#> ✔ Writing 'NEWS.md'
use_test("my-test")
#> ✔ Adding 'testthat' to Suggests field in DESCRIPTION
#> ✔ Creating 'tests/testthat/'
#> ✔ Writing 'tests/testthat.R'
#> ● Call `use_test()` to initialize a basic test file and open it for editing.
#> ✔ Increasing 'testthat' version to '>= 2.1.0' in DESCRIPTION
#> ✔ Writing 'tests/testthat/test-my-test.R'
x <- 1
y <- 2
use_data(x, y)
#> ✔ Creating 'data/'
#> ✔ Saving 'x', 'y' to 'data/x.rda', 'data/y.rda'
# Use git ------------------------------------------------------------
use_git()
#> ✔ Initialising Git repo
#> ✔ Adding '.Rhistory', '.RData', '.Rproj.user' to '.gitignore'Please note that the usethis project is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.
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