[R-pkg-devel] Help with detritus on temporary directory note

[Héctor Meleiro Suárez]

Hello everybody. I'm having a problem submitting a package to CRAN. It
involves a NOTE about  detritus files on the temporary directory.

The thing is my package basically downloads a zip file to the temporary
directory, unzips, reads and processes some of the extracted files and
imports the data to the R environment. So after the examples and tests are
run the temporary directory is full of those files. So I implemented an
internal cleanup function that removes the download zip file and the
directory to which the files are extracted and, of course, the NOTE
disappears. But I really don't like this approach because I want the
function to keep the files in the temporary directory so that if a file has
been already downloaded it would not download the file again and just read
the data.

I thought that R cleaned up the temporary directory when the session ended.
So why is this a problem? Is it that there are too many files aftes
examples and tests are run? or would this NOTE be an issue to CRAN even if
only one file was detected at the end?

Thanks in advance.

This is the NOTE on the logs:

* checking for detritus in the temp directory ... NOTE
Found the following files/directories:
  ‘RtmpRfd2nv\02202307_MESA’ ‘RtmpRfd2nv\02202307_MESA.zip’
  ‘RtmpRfd2nv\02202307_MUNI’ ‘RtmpRfd2nv\02202307_MUNI.zip’
  ‘RtmpRfd2nv\02202307_TOTA’ ‘RtmpRfd2nv\02202307_TOTA.zip’
  ‘RtmpRfd2nv\03202307_MUNI’ ‘RtmpRfd2nv\03202307_MUNI.zip’
  ‘RtmpUEZkAQ\02198210_MUNI’ ‘RtmpUEZkAQ\02198210_MUNI.zip’
  ‘RtmpUEZkAQ\02201904_MESA’ ‘RtmpUEZkAQ\02201904_MESA.zip’
  ‘RtmpUEZkAQ\03201911_MUNI’ ‘RtmpUEZkAQ\03201911_MUNI.zip’
  ‘RtmpVtjuwE\02198210_TOTA’ ‘RtmpVtjuwE\02198210_TOTA.zip’
  ‘RtmpVtjuwE\02201911_MUNI’ ‘RtmpVtjuwE\02201911_MUNI.zip’
  ‘RtmpVtjuwE\03200403_MUNI’ ‘RtmpVtjuwE\03200403_MUNI.zip’
  ‘RtmpcFaNBb\02201512_MUNI’ ‘RtmpcFaNBb\02201512_MUNI.zip’
  ‘Rtmpe86bkd\02198210_TOTA’ ‘Rtmpe86bkd\02198210_TOTA.zip’
  ‘Rtmpe86bkd\02201911_MUNI’ ‘Rtmpe86bkd\02201911_MUNI.zip’
  ‘Rtmpe86bkd\02202307_MESA’ ‘Rtmpe86bkd\02202307_MESA.zip’
  ‘Rtmpe86bkd\03200403_MUNI’ ‘Rtmpe86bkd\03200403_MUNI.zip’
* DONE
Status: 1 NOTE

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