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[Backport release-24.05] nixos/iso-image: Compress squashfs with zstd 19 (#338666)

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Will Fancher 2024-08-31 15:28:47 -04:00 committed by GitHub
commit 47e3e31a29
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nixos/modules/installer/cd-dvd/iso-image.nix
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@ -506,12 +506,7 @@ in
};
isoImage.squashfsCompression = mkOption {
default = with pkgs.stdenv.hostPlatform; "xz -Xdict-size 100% "
+ lib.optionalString isx86 "-Xbcj x86"
# Untested but should also reduce size for these platforms
+ lib.optionalString isAarch "-Xbcj arm"
+ lib.optionalString (isPower && is32bit && isBigEndian) "-Xbcj powerpc"
+ lib.optionalString (isSparc) "-Xbcj sparc";
default = "zstd -Xcompression-level 19";
type = lib.types.nullOr lib.types.str;
description = ''
Compression settings to use for the squashfs nix store.