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Re: [idea]: Switch default compression from "xz" to "zstd" for .deb packages

If you want to open that debate (again?), one should probably switch to
lzip. It uses the same LZMA compression like xz, but has a way more
sane file format.

Also note that the (pretended) multi-threading-capability of xz is
mostly based on its improper file format[1]:

> The xz-utils manual says that LZMA2 is an updated version of LZMA to
> fix some practical issues of LZMA. This wording suggests that LZMA2
> is some sort of improved LZMA algorithm. (After all, the 'A' in LZMA
> stands for 'algorithm'). But LZMA2 is a container format that divides
> LZMA data into chunks in an unsafe way. 


[1] https://www.nongnu.org/lzip/xz_inadequate.html

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