jonkeane commented on PR #38195:
URL: https://github.com/apache/arrow/pull/38195#issuecomment-1758615897

   > @jonkeane @nealrichardson we default to setting libarrow_minimal in 
nixlibs/build_r_static.sh if NOT_CRAN is not set. What is the main motivation 
for that? Keeping build times on CRAN linux builds small?
   
   IIRC it was both to keep build times low and to not enable features we knew 
to be problematic on some architecture. Problematic here being both not being 
able to be built as well as having issues while testing (snappy + sanitizer 
issues is one I remember battling, though I believe we actually special case 
these tests to not run on the sanitizer environments and IIUC snappy has 
finally fixed the one we were running into)
   
   Our extended cran like CI should alert if we try that on a branch (though we 
would definitely want to make sure the sanitizer build runs there too)


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