detachAll

This uses <code>pkgDepTopoSort</code> 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
<code>glue</code>, <code>rlang</code>, <code>ps</code>, <code>ellipsis</code>, and, <code>processx</code>.

A single key function, 'Require' that makes rerun-tolerant
versions of 'install.packages' and `require` for CRAN packages, packages
no longer on CRAN (i.e., archived), specific versions of packages,
and GitHub packages. This approach is developed to create reproducible
workflows that are flexible and fast enough to use while in development stages,
while able to build snapshots once a stable package collection is found.
As with other functions in a reproducible workflow, this package
emphasizes functions that return the same result whether it is
the first or subsequent times running the function, with subsequent times being
sufficiently fast that they can be run every time without undue waiting burden on
the user or developer.

Eliot J B

Require

Installing and Loading R Packages for Reproducible Workflows

Eliot J B McIntire

Alex M Chubaty

Her Majesty the Queen in Right of Canada, as represented by the Minister of Natural Resources Canada 

detachAll function

<dl><dt>pkgs</dt>
<dd>A character vector of packages to detach. Will be topologically sorted
unless <code>doSort</code> is <code>FALSE</code>.</dd>
<dt>dontTry</dt>
<dd>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"</dd>
<dt>doSort</dt>
<dd>If <code>TRUE</code> (the default), then the <code>pkgs</code> will be
topologically sorted. If <code>FALSE</code>, then it won't. Useful if the
<code>pkgs</code> are already sorted.</dd>
<dt>verbose</dt>
<dd>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 <code>1</code> or TRUE, more outputs; <code>2</code> even more. NOTE: in
<code>Require</code> function, when <code>verbose &gt;= 2</code>, also returns details as if
<code>returnDetails = TRUE</code> (for backwards compatibility).</dd></dl>

Arguments

Detach and unload all packages — detachAll

<dl>

<dt>pkgs</dt>
<dd>A character vector of packages to detach. Will be topologically sorted
unless <code>doSort</code> is <code>FALSE</code>.</dd>


<dt>dontTry</dt>
<dd>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"</dd>


<dt>doSort</dt>
<dd>If <code>TRUE</code> (the default), then the <code>pkgs</code> will be
topologically sorted. If <code>FALSE</code>, then it won't. Useful if the
<code>pkgs</code> are already sorted.</dd>


<dt>verbose</dt>
<dd>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 <code>1</code> or TRUE, more outputs; <code>2</code> even more. NOTE: in
<code>Require</code> function, when <code>verbose &gt;= 2</code>, also returns details as if
<code>returnDetails = TRUE</code> (for backwards compatibility).</dd>

</dl>

detachAll: Detach and unload all packages

Description

Usage

Value

Arguments