[R-SIG-Mac] zstd/xz compressed macos binaries

Gábor Csárdi c@@rd|@g@bor @end|ng |rom gm@||@com
Sun Sep 20 10:24:43 CEST 2026


Just saw that (some of?) the new macOS binaries for R 4.6 are zstd
compressed:

❯ curl -LO
https://cloud.r-project.org/bin/macosx/sonoma-arm64/contrib/4.6/knitr_1.52.tgz

❯ file knitr_1.52.tgz
knitr_1.52.tgz: Zstandard compressed data (v0.8+), Dictionary ID: None

OTOH the new 4.7 binaries are xz compressed, with a new file name scheme:
https://mac.r-project.org/bin/macos/arm64/contrib/4.7/

Is this what we can expect for the near future, gz/zstd in .tgz for 4.6 and
xz in .tar.xz starting from 4.7, or this might still change?

Thanks,
Gabor

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