[R-SIG-Mac] Error identifying system version in sessionInfo()

[Prof Brian Ripley]

On 13/01/2022 18:32, Rohde, Maximilian D wrote:
> Hello,
> 
> I have encountered a bug that I have documented here: https://stackoverflow.com/questions/70690684/wrong-session-info-in-when-knitting-in-r-markdown?noredirect=1#comment124971021_70690684
> 
> In brief, the issue is that running the `sessionInfo()` function in a terminal session of R gives the wrong operating system for my computer. I am running Monterey 12.1, but it returns Big Sur 10.16. However, running the same command in the RStudio console gives the correct operating system.
> 
> I have narrowed down the problem to this command giving different output depending on if it is run in RStudio or in the terminal: `readLines("/System/Library/CoreServices/SystemVersion.plist”)`
> 
> Any help is appreciated, thank you!

This is documented!  ?sessionInfo says

      Where R was compiled under macOS 10.x (as the CRAN Intel
      distributions have been) but running under ‘Big Sur’ or later,
      macOS reports itself as ‘10.16’ (which R recognizes as ‘Big
      Sur/Monterey’) and not ‘11.x’ or ‘12.x’.

This is a bug in macOS, not in R.



> 
> Best,
> Max
> 
> 	[[alternative HTML version deleted]]

Please follow the posting guide, do your own homework and not send HTML.

> 
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-- 
Brian D. Ripley,                  ripley using stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford