[R-pkg-devel] R CMD build --resave-data not working

I am building a package using R 4.0.4 on OS X 10.15.7.

In a terminal I type:

R CMD build --resave-data AirSensor

Then, I check with:

R CMD check --as-cran AirSensor_1.0.8.tar.gz

Everything is fine until I see:


* checking data for ASCII and uncompressed saves ... WARNING



  Note: significantly better compression could be obtained

        by using R CMD build --resave-data

                            old_size new_size compress

  example_pas.rda              1.6Mb    1.1Mb       xz

  example_pas_raw.rda          114Kb     86Kb       xz

  example_pat.rda              965Kb    444Kb       xz

  example_pat_failure_A.rda    527Kb    259Kb       xz

  example_pat_failure_B.rda    411Kb    198Kb       xz

  example_sensor_scaqmd.rda    108Kb     76Kb       xz

I get the same WARNING if I submit to win-builder.R-project.org.

I've built many packages in the past and am currently stumped as to what
might be happening.

Jonathan Callahan, PhD
Mazama Science
206-708-5028
mazamascience.com

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