Path to (package) cache directory — cacheDir • Require

Sets (if create = TRUE) or gets the cache directory associated with the Require package.

Usage

cacheDir(create, verbose = getOption("Require.verbose"))

cachePkgDir(create)

Arguments

create: A logical indicating whether the path should be created if it does not exist. Default is FALSE.
verbose: Numeric or logical indicating how verbose should the function be. If -1 or -2, then as little verbosity as possible. If 0 or FALSE, then minimal outputs; if 1 or TRUE, more outputs; 2 even more. NOTE: in Require function, when verbose >= 2, also returns details as if returnDetails = TRUE (for backwards compatibility).

Value

If !is.null(cacheGetOptionCachePkgDir()), i.e., a cache path exists, the cache directory will be created, with a README placed in the folder. Otherwise, this function will just return the path of what the cache directory would be.

Details

To set a different directory than the default, set the system variable: R_REQUIRE_CACHE = "somePath" and/or R_REQUIRE_PKG_CACHE = "somePath" e.g., in .Renviron file or Sys.setenv(). See Note below.

Note

There are two different cache directories used by Require: cacheDir and cachePkgDir. The cachePkgDir is intended to be a sub-directory of the cacheDir. If you set Sys.setenv("R_REQUIRE_CACHE" = "somedir"), then both the package cache and cache dirs will be set, with the package cache a sub-directory. You can, however, set them independently, if you set "R_REQUIRE_CACHE" and "R_REQUIRE_PKG_CACHE" environment variables. The package cache can also be set with options("Require.cachePkgDir" = "somedir").