Given a list of packages, downloads these packages to a specified destination folder using the required CRAN folder structure, and finally creates the PACKAGES index file. Since the folder structure mimics the required structure and files of a CRAN repository, it supports functions like utils::install.packages().

  repos = getOption("repos"),
  type = "source",
  Rversion = R.version,
  download = TRUE,
  quiet = FALSE

updateRepoIndex(path, type = "source", Rversion = R.version)



Character vector of packages to download


Destination download path. This path is the root folder of your new repository.


URL(s) of the 'contrib' sections of the repositories, e.g. "". Passed to available.packages()


Possible values are (currently) "source", "mac.binary" and "win.binary": the binary types can be listed and downloaded but not installed on other platforms. Passed to download.packages().


Version of R (only used if type is not source.) Defaults to R.version, but this can be specified as any of the following formats:

  • a character string with the two digit R version, e.g. "3.1"

  • a list with components major and minor

  • the result of getRversion()

  • the result of R.version


If TRUE downloads packages.


If TRUE, calls write_PACKAGES() to update the repository PACKAGES file.


If TRUE, suppress status messages (if any), and the progress bar during download.


character vector of downloaded package files


Internally makes use of utils::download.packages() and write_PACKAGES()

Repo folder structure

A repository has two main folders, one for source packages, and the other for binary packages. Inside the binary package folder, bin, you will find subfolders for Windows as well as the various OSX binaries.

+- Root

...+- src/contrib

......+- PACKAGES

..+- bin

.......+- windows/contrib/version

..........+- PACKAGES

.......+- macosx/contrib/version

..........+- PACKAGES

.......+- macosx/mavericks/contrib/version

..........+- PACKAGES

.......+- macosx/leopard/contrib/version

..........+- PACKAGES

See also

Other update repo functions: addOldPackage(), addPackage(), checkVersions(), updatePackages()


# Specify list of packages to download revolution <- c(CRAN = getOption("minicran.mran")) pkgs <- c("foreach") pdb <- cranJuly2014 if (FALSE) { pdb <- pkgAvail( repos = c(CRAN = getOption("minicran.mran")), type = "source" ) } pkgList <- pkgDep(pkgs, availPkgs = pdb, repos = revolution, type = "source", suggests = FALSE) pkgList
#> [1] "foreach" "codetools" "iterators"
if (FALSE) { # Create temporary folder for miniCRAN dir.create(pth <- file.path(tempdir(), "miniCRAN")) # Make repo for source and win.binary makeRepo(pkgList, path = pth, repos = revolution, type = "source") # List all files in miniCRAN list.files(pth, recursive = TRUE) # Check for available packages pkgAvail(repos = pth, type = "source") # Repeat process for windows binaries makeRepo(pkgList, path = pth, repos = revolution, type = "win.binary") pkgAvail(repos = pth, type = "win.binary") # Delete temporary folder unlink(pth, recursive = TRUE) }