structuredAttrs is enabled Parallel mksquashfs: Using 80 processors Creating 4.0 filesystem on nix-store.squashfs, block size 1048576. Exportable Squashfs 4.0 filesystem, zstd compressed, data block size 1048576 compressed data, compressed metadata, compressed fragments, compressed xattrs, compressed ids duplicates are removed Filesystem size 565839.16 Kbytes (552.58 Mbytes) 36.20% of uncompressed filesystem size (1562974.29 Kbytes) Inode table size 1154893 bytes (1127.83 Kbytes) 20.68% of uncompressed inode table size (5583315 bytes) Directory table size 1457331 bytes (1423.17 Kbytes) 40.26% of uncompressed directory table size (3620241 bytes) Number of duplicate files found 4278 Number of inodes 147581 Number of files 87426 Number of fragments 971 Number of symbolic links 14524 Number of device nodes 0 Number of fifo nodes 0 Number of socket nodes 0 Number of directories 45631 Number of hard-links 0 Number of ids (unique uids + gids) 1 Number of uids 1 root (0) Number of gids 1 root (0) xorriso 1.5.6 : RockRidge filesystem manipulator, libburnia project. xorriso : NOTE : Environment variable SOURCE_DATE_EPOCH encountered with value 315532800 Drive current: -outdev 'stdio:/nix/store/blgdnqw8wyv7g1b168f66gxhgj0vxdqf-nixos-26.05.20260809.fcb8fcd-aarch64-linux.iso/iso/nixos-26.05.20260809.fcb8fcd-aarch64-linux.iso' Media current: stdio file, overwriteable Media status : is blank Media summary: 0 sessions, 0 data blocks, 0 data, 1613g free xorriso : WARNING : -volid text does not comply to ISO 9660 / ECMA 119 rules xorriso : UPDATE : 56 files added in 1 seconds Added 8 items from file 'pathlist' xorriso : UPDATE : 56 files added in 1 seconds xorriso : UPDATE : 22.65% done ISO image produced: 330988 sectors Written to medium : 330988 sectors at LBA 0 Writing to 'stdio:/nix/store/blgdnqw8wyv7g1b168f66gxhgj0vxdqf-nixos-26.05.20260809.fcb8fcd-aarch64-linux.iso/iso/nixos-26.05.20260809.fcb8fcd-aarch64-linux.iso' completed successfully.