checkLibPaths

Creates the directories, and adds version number

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 

checkLibPaths function

<dl><dt>libPaths</dt>
<dd>The library path (or libraries) where all packages should be
installed, and looked for to load (i.e., call <code>library</code>). This can be used
to create isolated, stand alone package installations, if used with
<code>standAlone = TRUE</code>. Currently, the path supplied here will be prepended to
<code><a href="/link/.libPaths()?package=Require&version=1.0.1" data-mini-rdoc="Require::.libPaths()">.libPaths()</a></code> (temporarily during this call) to <code>Require</code> if
<code>standAlone = FALSE</code> or will set (temporarily) <code><a href="/link/.libPaths()?package=Require&version=1.0.1" data-mini-rdoc="Require::.libPaths()">.libPaths()</a></code> to
<code>c(libPaths, tail(libPaths(), 1)</code> to keep base packages.</dd>
<dt>ifMissing</dt>
<dd>An alternative path if <code>libPaths</code> argument is missing.</dd>
<dt>exact</dt>
<dd>Logical. If <code>FALSE</code>, the default, then <code>checkLibPaths</code> will
append the R version number on the <code>libPaths</code> supplied. If <code>TRUE</code>, <code>checkLibPaths</code>
will return exactly the <code>libPaths</code> supplied.</dd>
<dt>...</dt>
<dd>Not used, but allows other functions to pass through arguments.</dd></dl>

Arguments

Creates the directories, and adds version number — checkLibPaths

<dl>

<dt>libPaths</dt>
<dd>The library path (or libraries) where all packages should be
installed, and looked for to load (i.e., call <code>library</code>). This can be used
to create isolated, stand alone package installations, if used with
<code>standAlone = TRUE</code>. Currently, the path supplied here will be prepended to
<code><a href='https://rdrr.io/r/base/libPaths.html'>.libPaths()</a></code> (temporarily during this call) to <code>Require</code> if
<code>standAlone = FALSE</code> or will set (temporarily) <code><a href='https://rdrr.io/r/base/libPaths.html'>.libPaths()</a></code> to
<code>c(libPaths, tail(libPaths(), 1)</code> to keep base packages.</dd>


<dt>ifMissing</dt>
<dd>An alternative path if <code>libPaths</code> argument is missing.</dd>


<dt>exact</dt>
<dd>Logical. If <code>FALSE</code>, the default, then <code>checkLibPaths</code> will
append the R version number on the <code>libPaths</code> supplied. If <code>TRUE</code>, <code>checkLibPaths</code>
will return exactly the <code>libPaths</code> supplied.</dd>


<dt>...</dt>
<dd>Not used, but allows other functions to pass through arguments.</dd>

</dl>

checkLibPaths: Creates the directories, and adds version number

Description

Usage

Arguments