title: Deploying a Shiny app using a self-written package
body: <p>I have a working shiny app which uses library(coral),  where coral is a package I wrote myself, installed in the directory of the shiny app. </p>
  
  <p>When I attempt to deploy my app onto shinyapps.io, I receive the following message:</p>
  
  <pre><code>Error: Unable to retrieve package records for the following packages:
  - "coral"
  Execution halted
  </code></pre>
  
  <p>From what I can gather online, the issue is probably that coral is not on CRAN,  so shinyapps.io cannot get the records for that package from there.</p>
  
  <p>Is that a correct description of the problem? And is there a simple solution?</p>
  
  <p>Thanks in advance.</p>