Carrying R-CRAN Package for Range Using the Forecast Package as an Example

renjin's approach seems great. However, the compatibility with the R base is not 100% and there are many very interesting packages that do not / partially work with renjin.

I'm new to renjin but would really like to use it. But some important packages like the package forecast

are missing or at least the tests are not running in renjin.

To focus this question a little more, I started porting the forecast package. You will find the current status https://github.com/geoHeil/forecast However, it still contains bugs.

• Why does the build fail if I delete the man folder that contains the R documentation?
• I understand that other referenced packages can create problems when importing, but even if they are disabled. I still cannot load the namespace file to run a simple hamcrest
  
  test-case example
• Why is he trying to download a package from CRAN? Why isn't the default package listed?

This error message:

No default packages specified
Could not load this project namespace (it may not have one)
org.renjin.eval.EvalException: Could not load package org.renjin.cran:forecast

      

        
        
        
      

    

• Is there a better link http://docs.renjin.org/en/latest/writing-renjin-extensions.html to show how to move CRAN packets in a renjin compatible format?