From ec4ca8a22bfeba226ff5d7faeebf67250f3a957f Mon Sep 17 00:00:00 2001
From: Natalie Spiva <natalie@acreetionos.org>
Date: Sat, 20 Jun 2026 05:35:13 -0700
Subject: [PATCH] feat: optimize compression settings (#3)

- Switch squashfs from xz to zstd (compression level 19)
- zstd provides multi-threaded compression for faster builds
- zstd offers better speed/ratio tradeoff vs single-threaded xz
- Bootstrap tarball already optimized with zstd -T0 --auto-threads=logical

Closes #3
---
 profiledef.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/profiledef.sh b/profiledef.sh
index ccd37ae..ab2fc58 100644
--- a/profiledef.sh
+++ b/profiledef.sh
@@ -12,7 +12,7 @@ bootmodes=('bios.syslinux' 'uefi.grub')
 arch="x86_64"
 pacman_conf="pacman.conf"
 airootfs_image_type="squashfs"
-airootfs_image_tool_options=('-comp' 'xz' '-Xbcj' 'x86' '-b' '1M' '-Xdict-size' '1M')
+airootfs_image_tool_options=('-comp' 'zstd' '-Xcompression-level' '19' '-b' '1M')
 bootstrap_tarball_compression=('zstd' '-c' '-T0' '--auto-threads=logical' '--long' '-19')
 file_permissions=(
   ["/etc/shadow"]="0:0:400"