lib.convert: Move normally installed packages to R_MV_library structure.

In multiversion: Version Controlled Package Manager

Move normally installed packages to R_MV_library structure.

Description

After this conversion is completed and you configure (temporarily by using lib.location(...) or for eternity by setting the equally named environment variable) the R_MV_LIBRARY_LOCATION env var, you are good to go! You can directly use lib.load for loading packages. Thanks for using multiversion!!

This function creates the R_MV_library structure by moving normally installed packages to a parallel library structure. <lib1>/BH/DESCRIPTION becomes<lib2>/BH/1.60.0-2/BH/DESCRIPTION so that also 1.60.0-3 etc. can be installed.
This functionality is also used (with it's default values) for converting installed packages from the temporary installation directory to the final R_MV_library. The TEMP installation directory is in a standard flat library structure.

Note that it is really no problem to perform a conversion again, it will only move new versions of already present packages and will never overwrite. To continue with a clean Temp folder, run lib.clean_install_dir() which will remove the folder.

Usage

lib.convert(
  source_lib = lib.location_install_dir(destination_mv_lib),
  destination_mv_lib = lib.location(),
  force_overwrite = FALSE,
  packages_to_convert
)

Arguments

source_lib	The temporary library where a package is temporarily installed (having a normal library structure). By default, the path is generated using lib.location_install_dir() on the destination_mv_lib that is provided which appends /TEMP_install_location.
destination_mv_lib	The folder containing a structure where all packages in the temp folder must be moved to. By default, it checks the environment variable R_MV_LIBRARY_LOCATION for this directory.
force_overwrite	If you are experimenting and you would like to overwrite the newly installed package. Normally only desired when the package you are experimenting with is a self maintained package and you are sure you increased the version to a new one.
packages_to_convert	A character vector with the names of the packages that need to be converted to the R_MV_library. If missing or empty, all will be converted.

Value

No return value, it is called for it's side-effect. Will convert a set of packages from a normal package library structure to a multiversion library version. By default, from the temporary multiversion installation directory to the final multiversion library.

Examples

# As an experiment (or when getting started) you could run this with
# your complete standard library (not your base library).

#> lib.convert(source_lib = Sys.getenv("R_LIBS_USER"),
#>             destination_mv_lib  = "./REMOVE_ME_example_library")

# Running the same operation a second time will result
# in a notification that all files were already copied.

# Just running it will use the R_MV_library defined by the environment
# variable and look inside for the Temp folder to use.

#> lib.convert()

# It is sufficient to only provide the destination_mv_lib,
# it will look for the "/TEMP_install_location" folder as the 'source_lib' by default.

#> lib.convert(destination_mv_lib = "./R_MV_library")

multiversion documentation built on March 22, 2022, 1:07 a.m.