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rr-packagecranr-s3

R package check stuck on "checking use of S3 registration ..."

I am developing an R package which I plan to upload to CRAN.

Upon checking the tarball created with R CMD BUILD, I try to use R CMD CHECK as follows:

R CMD CHECK my_package.tar.gz --as-cran

This normally works smoothly. However, in this case, it is stuck on checking use of S3 registration and has been there for several hours. I've never experienced this before; here's the partial output I see:

...
 * checking package subdirectories ... OK
 * checking R files for non-ASCII characters ... OK
 * checking R files for syntax errors ... OK
 * checking whether the package can be loaded ... OK
 * checking whether the package can be loaded with stated dependencies ... OK
 * checking whether the package can be unloaded cleanly ... OK
 * checking whether the namespace can be loaded with stated dependencies ... OK
 * checking whether the namespace can be unloaded cleanly ... OK
 * checking use of S3 registration ...

(1) What does checking use of S3 registration really mean?

(2) More importantly, why would it be stuck here? How could I fix this issue?

Any insight or help greatly appreciated. Thanks!

Solution

  • For those arriving via Google as I did, it is likely to be an XQuartz problem. Duncan Murdoch documented how to fix it on the R-Sig-Mac mail list.

    https://stat.ethz.ch/pipermail/r-sig-mac/2021-February/013952.html

    Following his instructions and reinstalling XQuartz worked for me to resolve the issue with S3 registration checking.