install: Install a local development package.

View source: R/install.R

installR Documentation

Install a local development package.


Uses R CMD INSTALL to install the package. Will also try to install dependencies of the package from CRAN, if they're not already installed.


  pkg = ".",
  reload = TRUE,
  quick = FALSE,
  build = !quick,
  args = getOption("devtools.install.args"),
  quiet = FALSE,
  dependencies = NA,
  upgrade = "default",
  build_vignettes = FALSE,
  keep_source = getOption("keep.source.pkgs"),
  force = FALSE,



The package to use, can be a file path to the package or a package object. See as.package() for more information.


if TRUE (the default), will automatically reload the package after installing.


if TRUE skips docs, multiple-architectures, demos, and vignettes, to make installation as fast as possible.


if TRUE pkgbuild::build()s the package first: this ensures that the installation is completely clean, and prevents any binary artefacts (like ‘.o’, .so) from appearing in your local package directory, but is considerably slower, because every compile has to start from scratch.


An optional character vector of additional command line arguments to be passed to R CMD INSTALL. This defaults to the value of the option "devtools.install.args".


If TRUE, suppress output.


Which dependencies do you want to check? Can be a character vector (selecting from "Depends", "Imports", "LinkingTo", "Suggests", or "Enhances"), or a logical vector.

TRUE is shorthand for "Depends", "Imports", "LinkingTo" and "Suggests". NA is shorthand for "Depends", "Imports" and "LinkingTo" and is the default. FALSE is shorthand for no dependencies (i.e. just check this package, not its dependencies).

The value "soft" means the same as TRUE, "hard" means the same as NA.

You can also specify dependencies from one or more additional fields, common ones include:

  • Config/Needs/website - for dependencies used in building the pkgdown site.

  • Config/Needs/coverage for dependencies used in calculating test coverage.


Should package dependencies be upgraded? One of "default", "ask", "always", or "never". "default" respects the value of the R_REMOTES_UPGRADE environment variable if set, and falls back to "ask" if unset. "ask" prompts the user for which out of date packages to upgrade. For non-interactive sessions "ask" is equivalent to "always". TRUE and FALSE are also accepted and correspond to "always" and "never" respectively.


if TRUE, will build vignettes. Normally it is build that's responsible for creating vignettes; this argument makes sure vignettes are built even if a build never happens (i.e. because build = FALSE).


If TRUE will keep the srcrefs from an installed package. This is useful for debugging (especially inside of RStudio). It defaults to the option "keep.source.pkgs".


Force installation, even if the remote state has not changed since the previous install.


additional arguments passed to remotes::install_deps() when installing dependencies.


If quick = TRUE, installation takes place using the current package directory. If you have compiled code, this means that artefacts of compilation will be created in the src/ directory. If you want to avoid this, you can use build = TRUE to first build a package bundle and then install it from a temporary directory. This is slower, but keeps the source directory pristine.

If the package is loaded, it will be reloaded after installation. This is not always completely possible, see reload() for caveats.

To install a package in a non-default library, use withr::with_libpaths().

See Also

update_packages() to update installed packages from the source location and with_debug() to install packages with debugging flags set.

Other package installation: uninstall()

devtools documentation built on Oct. 12, 2022, 1:06 a.m.