Library paths — with_libpaths • withr

Temporarily change library paths.

Usage

with_libpaths(new, code, action = "replace")

local_libpaths(new = list(), action = "replace", .local_envir = parent.frame())

Arguments

new: [character]
New library paths
code: [any]
Code to execute in the temporary environment
action: [character(1)]
should new values "replace", "prefix" or "suffix" existing paths.
.local_envir: [environment]
The environment to use for scoping.

Value

[any]
The results of the evaluation of the code argument.

See also

withr for examples

Other libpaths: with_temp_libpaths()

Examples

.libPaths()
#> [1] "/home/runner/work/_temp/Library" "/opt/R/4.4.1/lib/R/site-library"
#> [3] "/opt/R/4.4.1/lib/R/library"     
new_lib <- tempfile()
dir.create(new_lib)
with_libpaths(new_lib, print(.libPaths()))
#> [1] "/tmp/RtmpcHnEKr/file162e4dce150e" "/opt/R/4.4.1/lib/R/site-library" 
#> [3] "/opt/R/4.4.1/lib/R/library"      
unlink(new_lib, recursive = TRUE)