these 5 derivations will be built: /nix/store/4k2sidn39bx3g60ilrapifrn3lswcz5v-closure-info.drv /nix/store/8vp12msrvd7piq9cyqxh28vpwlmx51gc-efi-directory.drv /nix/store/dps8s40r42l00j8m439077jjcfa040yh-isolinux.cfg.drv /nix/store/wkyzl1cwjxymys2b341q4ghzjnsza2ia-efi-image_eltorito.drv /nix/store/mvxyncl5y7p1ry3dyfn036jzwjplmmf5-spaces-os.iso.drv building '/nix/store/dps8s40r42l00j8m439077jjcfa040yh-isolinux.cfg.drv' building '/nix/store/4k2sidn39bx3g60ilrapifrn3lswcz5v-closure-info.drv' building '/nix/store/8vp12msrvd7piq9cyqxh28vpwlmx51gc-efi-directory.drv' closure-info> structuredAttrs is enabled efi-directory> Building GRUB with modules: efi-directory> - fat efi-directory> - iso9660 efi-directory> - part_gpt efi-directory> - part_msdos efi-directory> - normal efi-directory> - boot efi-directory> - linux efi-directory> - configfile efi-directory> - loopback efi-directory> - chain efi-directory> - halt efi-directory> - efifwsetup efi-directory> - efi_gop efi-directory> - ls efi-directory> - search efi-directory> - search_label efi-directory> - search_fs_uuid efi-directory> - search_fs_file efi-directory> - echo efi-directory> - serial efi-directory> - gfxmenu efi-directory> - gfxterm efi-directory> - gfxterm_background efi-directory> - gfxterm_menu efi-directory> - test efi-directory> - loadenv efi-directory> - all_video efi-directory> - videoinfo efi-directory> - png efi-directory> Adding additional modules: efi-directory> - efi_uga efi-directory> '/nix/store/c6zqczb7nhr8754qqkpjchyvkxwnch71-refind-0.14.2/share/refind/refind_x64.efi' -> '/nix/store/pfjx36xiy17dq9n12sbrpx7lcwz2dh1n-efi-directory/EFI/BOOT/refind_x64.efi' building '/nix/store/wkyzl1cwjxymys2b341q4ghzjnsza2ia-efi-image_eltorito.drv' efi-image_eltorito> Usage size: 2097152 efi-image_eltorito> Image size: 3145728 efi-image_eltorito> mkfs.fat 4.2 (2021-01-31) efi-image_eltorito> Copying BOOTX64.EFI efi-image_eltorito> Copying grub.cfg efi-image_eltorito> Copying refind_x64.efi efi-image_eltorito> fsck.fat 4.2 (2021-01-31) efi-image_eltorito> Checking we can access the last sector of the filesystem efi-image_eltorito> Boot sector contents: efi-image_eltorito> System ID "mkfs.fat" efi-image_eltorito> Media byte 0xf8 (hard disk) efi-image_eltorito> 512 bytes per logical sector efi-image_eltorito> 2048 bytes per cluster efi-image_eltorito> 1 reserved sector efi-image_eltorito> First FAT starts at byte 512 (sector 1) efi-image_eltorito> 2 FATs, 12 bit entries efi-image_eltorito> 2560 bytes per FAT (= 5 sectors) efi-image_eltorito> Root directory starts at byte 5632 (sector 11) efi-image_eltorito> 512 root directory entries efi-image_eltorito> Data area starts at byte 22016 (sector 43) efi-image_eltorito> 1525 data clusters (3123200 bytes) efi-image_eltorito> 32 sectors/track, 2 heads efi-image_eltorito> 0 hidden sectors efi-image_eltorito> 6144 sectors total efi-image_eltorito> Checking for unused clusters. efi-image_eltorito> /nix/store/p6x8rm06wil88nwj8hks87xnj2x8jad6-efi-image_eltorito: 6 files, 719/1525 clusters building '/nix/store/mvxyncl5y7p1ry3dyfn036jzwjplmmf5-spaces-os.iso.drv' spaces-os.iso> structuredAttrs is enabled spaces-os.iso> Parallel mksquashfs: Using 32 processors spaces-os.iso> Creating 4.0 filesystem on nix-store.squashfs, block size 1048576. spaces-os.iso> spaces-os.iso> spaces-os.iso> Exportable Squashfs 4.0 filesystem, zstd compressed, data block size 1048576 spaces-os.iso> compressed data, compressed metadata, compressed fragments, spaces-os.iso> compressed xattrs, compressed ids spaces-os.iso> duplicates are removed spaces-os.iso> Filesystem size 20295507.62 Kbytes (19819.83 Mbytes) spaces-os.iso> 63.64% of uncompressed filesystem size (31893374.92 Kbytes) spaces-os.iso> Inode table size 5887210 bytes (5749.23 Kbytes) spaces-os.iso> 22.22% of uncompressed inode table size (26499618 bytes) spaces-os.iso> Directory table size 6726437 bytes (6568.79 Kbytes) spaces-os.iso> 35.49% of uncompressed directory table size (18953641 bytes) spaces-os.iso> Number of duplicate files found 104798 spaces-os.iso> Number of inodes 677182 spaces-os.iso> Number of files 444142 spaces-os.iso> Number of fragments 5496 spaces-os.iso> Number of symbolic links 86955 spaces-os.iso> Number of device nodes 0 spaces-os.iso> Number of fifo nodes 0 spaces-os.iso> Number of socket nodes 0 spaces-os.iso> Number of directories 146085 spaces-os.iso> Number of hard-links 0 spaces-os.iso> Number of ids (unique uids + gids) 1 spaces-os.iso> Number of uids 1 spaces-os.iso> root (0) spaces-os.iso> Number of gids 1 spaces-os.iso> root (0) spaces-os.iso> xorriso 1.5.8.pl02 : RockRidge filesystem manipulator, libburnia project. spaces-os.iso> spaces-os.iso> xorriso : NOTE : Environment variable SOURCE_DATE_EPOCH encountered with value 315532800 spaces-os.iso> Drive current: -outdev 'stdio:/nix/store/447qv4cxy9sdpp0mf81fgvjp2wip5hb5-spaces-os.iso/iso/spaces-os.iso' spaces-os.iso> Media current: stdio file, overwriteable spaces-os.iso> Media status : is blank spaces-os.iso> Media summary: 0 sessions, 0 data blocks, 0 data, 1569g free spaces-os.iso> xorriso : UPDATE : 194 files added in 1 seconds spaces-os.iso> Added 12 items from file 'pathlist' spaces-os.iso> xorriso : UPDATE : 194 files added in 1 seconds spaces-os.iso> xorriso : NOTE : Copying to System Area: 432 bytes from file '/nix/store/02ggy47qb66jdq894c5b9in1r5f4y0wr-syslinux-unstable-2019-02-07/share/syslinux/isohdpfx.bin' spaces-os.iso> libisofs: NOTE : Automatically adjusted MBR geometry to 2535/255/63 spaces-os.iso> libisofs: WARNING : Image size exceeds 1024 cylinders. Cannot align partition. spaces-os.iso> libisofs: WARNING : There are said to be BIOSes which will not boot this via MBR. spaces-os.iso> xorriso : UPDATE : 0.21% done spaces-os.iso> xorriso : UPDATE : 2.26% done spaces-os.iso> xorriso : UPDATE : 4.48% done spaces-os.iso> xorriso : UPDATE : 6.74% done, estimate finish Mon Aug 03 08:07:54 2026 spaces-os.iso> xorriso : UPDATE : 9.38% done, estimate finish Mon Aug 03 08:07:52 2026 spaces-os.iso> xorriso : UPDATE : 11.59% done, estimate finish Mon Aug 03 08:07:53 2026 spaces-os.iso> xorriso : UPDATE : 13.89% done, estimate finish Mon Aug 03 08:07:54 2026 spaces-os.iso> xorriso : UPDATE : 16.62% done, estimate finish Mon Aug 03 08:07:53 2026 spaces-os.iso> xorriso : UPDATE : 19.04% done, estimate finish Mon Aug 03 08:07:53 2026 spaces-os.iso> xorriso : UPDATE : 21.35% done, estimate finish Mon Aug 03 08:07:53 2026 spaces-os.iso> xorriso : UPDATE : 23.85% done, estimate finish Mon Aug 03 08:07:53 2026 spaces-os.iso> xorriso : UPDATE : 26.30% done, estimate finish Mon Aug 03 08:07:53 2026 spaces-os.iso> xorriso : UPDATE : 28.85% done, estimate finish Mon Aug 03 08:07:53 2026 spaces-os.iso> xorriso : UPDATE : 31.32% done, estimate finish Mon Aug 03 08:07:52 2026 spaces-os.iso> xorriso : UPDATE : 33.51% done, estimate finish Mon Aug 03 08:07:53 2026 spaces-os.iso> xorriso : UPDATE : 36.08% done, estimate finish Mon Aug 03 08:07:52 2026 spaces-os.iso> xorriso : UPDATE : 38.58% done, estimate finish Mon Aug 03 08:07:52 2026 spaces-os.iso> xorriso : UPDATE : 41.04% done, estimate finish Mon Aug 03 08:07:52 2026 spaces-os.iso> xorriso : UPDATE : 43.86% done, estimate finish Mon Aug 03 08:07:51 2026 spaces-os.iso> xorriso : UPDATE : 46.51% done, estimate finish Mon Aug 03 08:07:51 2026 spaces-os.iso> xorriso : UPDATE : 49.23% done, estimate finish Mon Aug 03 08:07:51 2026 spaces-os.iso> xorriso : UPDATE : 51.97% done, estimate finish Mon Aug 03 08:07:51 2026 spaces-os.iso> xorriso : UPDATE : 54.61% done, estimate finish Mon Aug 03 08:07:51 2026 spaces-os.iso> xorriso : UPDATE : 57.37% done, estimate finish Mon Aug 03 08:07:51 2026 spaces-os.iso> xorriso : UPDATE : 59.91% done, estimate finish Mon Aug 03 08:07:50 2026 spaces-os.iso> xorriso : UPDATE : 62.57% done, estimate finish Mon Aug 03 08:07:50 2026 spaces-os.iso> xorriso : UPDATE : 65.47% done, estimate finish Mon Aug 03 08:07:50 2026 spaces-os.iso> xorriso : UPDATE : 68.11% done, estimate finish Mon Aug 03 08:07:50 2026 spaces-os.iso> xorriso : UPDATE : 70.88% done, estimate finish Mon Aug 03 08:07:50 2026 spaces-os.iso> xorriso : UPDATE : 73.71% done, estimate finish Mon Aug 03 08:07:49 2026 spaces-os.iso> xorriso : UPDATE : 76.41% done, estimate finish Mon Aug 03 08:07:50 2026 spaces-os.iso> xorriso : UPDATE : 78.99% done, estimate finish Mon Aug 03 08:07:49 2026 spaces-os.iso> xorriso : UPDATE : 81.94% done, estimate finish Mon Aug 03 08:07:49 2026 spaces-os.iso> xorriso : UPDATE : 84.54% done, estimate finish Mon Aug 03 08:07:49 2026 spaces-os.iso> xorriso : UPDATE : 87.25% done, estimate finish Mon Aug 03 08:07:49 2026 spaces-os.iso> xorriso : UPDATE : 90.09% done, estimate finish Mon Aug 03 08:07:49 2026 spaces-os.iso> xorriso : UPDATE : 92.82% done, estimate finish Mon Aug 03 08:07:49 2026 spaces-os.iso> xorriso : UPDATE : 95.14% done spaces-os.iso> xorriso : UPDATE : 97.68% done spaces-os.iso> ISO image produced: 10179515 sectors spaces-os.iso> Written to medium : 10179515 sectors at LBA 0 spaces-os.iso> Writing to 'stdio:/nix/store/447qv4cxy9sdpp0mf81fgvjp2wip5hb5-spaces-os.iso/iso/spaces-os.iso' completed successfully. spaces-os.iso>