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Proposal: Compress releases using xz instead of gzip #1872
It seems like these days xz is quite common, my understanding it is built into macOS Finder now, 7-Zip supports it, and of course it works on Linux/Unix. It also saves quite a bit of space, reducing the release file by about 1.5 MiB:
I'm going to add a notice to the 2.10 changelog and advertise the change on the mailing list. If no objections are raised then 2.11 onwards will be compressed with xz instead of gzip.
Balancing compression ratio and wide-spread availability, xz seems best. For instance afaik neither zpaq nor kgb are supported by macOS Finder. It's nice to save space but making someone install a special tool they wouldn't otherwise use just to decompress a release adds a lot of friction.