Detach and unload all packages — detachAll • Require

This uses pkgDepTopoSort internally so that the package dependency tree is determined, and then packages are unloaded in the reverse order. Some packages don't unload successfully for a variety of reasons. Several known packages that have this problem are identified internally and *not* unloaded. Currently, these are glue, rlang, ps, ellipsis, and, processx.

detachAll(pkgs, dontTry = NULL, doSort = TRUE)

Arguments

pkgs	A character vector of packages to detach. Will be topologically sorted unless `doSort` is `FALSE`.
dontTry	A character vector of packages to not try. This can be used by a user if they find a package fails in attempts to unload it, e.g., "ps"
doSort	If `TRUE` (the default), then the `pkgs` will be topologically sorted. If `FALSE`, then it won't. Useful if the `pkgs` are already sorted.

Value

A numeric named vector, with names of the packages that were attempted. 2 means the package was successfully unloaded, 1 it was tried, but failed, 3 it was in the search path and was detached and unloaded.