title: dependency ‘slam’ is not available when installing TM package
body: <p>I was able to use the <code>library(tm)</code> in r without problem until today, when loading <code>tm</code> shows:</p>
  
  <pre><code>library(tm)
  </code></pre>
  
  <blockquote>
    <p>Loading required package: NLP</p>
    
    <p>Error in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]) : </p>
    
    <p>there is no package called ‘slam’</p>
    
    <p>Error: package or namespace load failed for ‘tm’</p>
  </blockquote>
  
  <p>I thought this is a dependency issue and seek to reinstall package</p>
  
  <pre><code>install.packages("tm")
  </code></pre>
  
  <blockquote>
    <p>Warning in install.packages : dependency ‘slam’ is not available</p>
  </blockquote>
  
  <p>and then try to find <code>slam</code>:</p>
  
  <pre><code>install.packages("slam")
  </code></pre>
  
  <blockquote>
    <p>Warning in install.packages :</p>
    
    <p>package ‘slam’ is not available (for R version 3.2.4)</p>
  </blockquote>
  
  <p>I also tried some of the issues listed <a href="https://stackoverflow.com/questions/25721884/how-should-i-deal-with-package-xxx-is-not-available-for-r-version-x-y-z-wa">here</a> and <code>chooseCRANmirror()</code>, still no luck. Is there something wrong with the package or is it just that my r does not allow 'slam' to install after today?</p>
  
  <p><strong>session info</strong></p>
  
  <pre><code>&gt; sessionInfo()
  R version 3.2.4 (2016-03-10)
  Platform: x86_64-apple-darwin13.4.0 (64-bit)
  Running under: OS X 10.11.6 (El Capitan)
  
  locale:
  [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
  
  attached base packages:
  [1] stats     graphics  grDevices utils     datasets  methods   base     
  
  other attached packages:
  [1] NLP_0.1-9
  
  loaded via a namespace (and not attached):
  [1] parallel_3.2.4 tools_3.2.4 
  </code></pre>