these 5 derivations will be built: /nix/store/7bpbg8bkyz8ngi2simmg5j4svcga1ka1-efi-directory.drv /nix/store/jpd4scn32v0909x0s0k6s6yqpdmqk659-closure-info.drv /nix/store/lk7sbakslb0vmwpl14rzca7g3y8x5pap-isolinux.cfg.drv /nix/store/xjax1mchnmyqq6a6hr40ih4r7qjv5bxk-efi-image_eltorito.drv /nix/store/kx6w279fwhhccwlhxwd3gy7pqprmx8na-spaces-os.iso.drv building '/nix/store/lk7sbakslb0vmwpl14rzca7g3y8x5pap-isolinux.cfg.drv' building '/nix/store/jpd4scn32v0909x0s0k6s6yqpdmqk659-closure-info.drv' building '/nix/store/7bpbg8bkyz8ngi2simmg5j4svcga1ka1-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/2xb5mqd4lnrpmjlaabdk08r08maza49n-efi-directory/EFI/BOOT/refind_x64.efi' building '/nix/store/xjax1mchnmyqq6a6hr40ih4r7qjv5bxk-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/mrpfn7xpbz7zg0bn5qk84375awiflmii-efi-image_eltorito: 6 files, 719/1525 clusters building '/nix/store/kx6w279fwhhccwlhxwd3gy7pqprmx8na-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 9014685.42 Kbytes (8803.40 Mbytes) spaces-os.iso> 44.74% of uncompressed filesystem size (20147799.37 Kbytes) spaces-os.iso> Inode table size 5881493 bytes (5743.65 Kbytes) spaces-os.iso> 22.22% of uncompressed inode table size (26468624 bytes) spaces-os.iso> Directory table size 6730675 bytes (6572.92 Kbytes) spaces-os.iso> 35.49% of uncompressed directory table size (18964314 bytes) spaces-os.iso> Number of duplicate files found 104906 spaces-os.iso> Number of inodes 677619 spaces-os.iso> Number of files 444374 spaces-os.iso> Number of fragments 5495 spaces-os.iso> Number of symbolic links 86949 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 146296 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/dh0x2ppdmgk8vw9qa613g1q45winfrd5-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, 1187g 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 1131/255/63 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 : 0.48% done spaces-os.iso> xorriso : UPDATE : 6.49% done spaces-os.iso> xorriso : UPDATE : 11.49% done, estimate finish Fri Aug 07 08:36:57 2026 spaces-os.iso> xorriso : UPDATE : 17.22% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 22.67% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 27.85% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 32.93% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 38.47% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 43.74% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 48.91% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 54.46% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 59.57% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 64.89% done, estimate finish Fri Aug 07 08:36:55 2026 spaces-os.iso> xorriso : UPDATE : 70.53% done, estimate finish Fri Aug 07 08:36:55 2026 spaces-os.iso> xorriso : UPDATE : 75.63% done, estimate finish Fri Aug 07 08:36:56 2026 spaces-os.iso> xorriso : UPDATE : 80.96% done, estimate finish Fri Aug 07 08:36:55 2026 spaces-os.iso> xorriso : UPDATE : 85.20% done, estimate finish Fri Aug 07 08:36:55 2026 spaces-os.iso> xorriso : UPDATE : 89.97% done spaces-os.iso> xorriso : UPDATE : 93.89% done spaces-os.iso> xorriso : UPDATE : 98.20% done spaces-os.iso> ISO image produced: 4539117 sectors spaces-os.iso> Written to medium : 4539117 sectors at LBA 0 spaces-os.iso> Writing to 'stdio:/nix/store/dh0x2ppdmgk8vw9qa613g1q45winfrd5-spaces-os.iso/iso/spaces-os.iso' completed successfully. spaces-os.iso> post-build step Upload to niks3: ok time=2026-08-07T08:37:04.439Z level=INFO msg="Uploading 1 paths to 127.0.0.1 (0 already cached)" time=2026-08-07T08:37:04.439Z level=INFO msg="Uploading dh0x2ppdmgk8vw9qa613g1q45winfrd5-spaces-os.iso (8.7GB)" time=2026-08-07T08:38:38.196Z level=INFO msg="Requesting additional part URLs" object_key=nar/0pix2ifgwrpygjdf1m9alxxrwcdfh9rj7pd10cwlsx2cvp7v9m7k.nar.zst current_part=101 requesting=100 time=2026-08-07T08:38:38.199Z level=INFO msg="Received additional part URLs" count=100 total_parts=200 time=2026-08-07T08:39:57.247Z level=INFO msg="Requesting additional part URLs" object_key=nar/0pix2ifgwrpygjdf1m9alxxrwcdfh9rj7pd10cwlsx2cvp7v9m7k.nar.zst current_part=201 requesting=100 time=2026-08-07T08:39:57.250Z level=INFO msg="Received additional part URLs" count=100 total_parts=300 time=2026-08-07T08:41:22.627Z level=INFO msg="Requesting additional part URLs" object_key=nar/0pix2ifgwrpygjdf1m9alxxrwcdfh9rj7pd10cwlsx2cvp7v9m7k.nar.zst current_part=301 requesting=100 time=2026-08-07T08:41:22.631Z level=INFO msg="Received additional part URLs" count=100 total_parts=400 time=2026-08-07T08:42:48.761Z level=INFO msg="Requesting additional part URLs" object_key=nar/0pix2ifgwrpygjdf1m9alxxrwcdfh9rj7pd10cwlsx2cvp7v9m7k.nar.zst current_part=401 requesting=100 time=2026-08-07T08:42:48.764Z level=INFO msg="Received additional part URLs" count=100 total_parts=500 time=2026-08-07T08:44:13.084Z level=INFO msg="Requesting additional part URLs" object_key=nar/0pix2ifgwrpygjdf1m9alxxrwcdfh9rj7pd10cwlsx2cvp7v9m7k.nar.zst current_part=501 requesting=100 time=2026-08-07T08:44:13.087Z level=INFO msg="Received additional part URLs" count=100 total_parts=600 time=2026-08-07T08:45:30.950Z level=INFO msg="Requesting additional part URLs" object_key=nar/0pix2ifgwrpygjdf1m9alxxrwcdfh9rj7pd10cwlsx2cvp7v9m7k.nar.zst current_part=601 requesting=100 time=2026-08-07T08:45:30.953Z level=INFO msg="Received additional part URLs" count=100 total_parts=700 time=2026-08-07T08:46:57.213Z level=INFO msg="Requesting additional part URLs" object_key=nar/0pix2ifgwrpygjdf1m9alxxrwcdfh9rj7pd10cwlsx2cvp7v9m7k.nar.zst current_part=701 requesting=100 time=2026-08-07T08:46:57.216Z level=INFO msg="Received additional part URLs" count=100 total_parts=800 time=2026-08-07T08:48:24.604Z level=INFO msg="Requesting additional part URLs" object_key=nar/0pix2ifgwrpygjdf1m9alxxrwcdfh9rj7pd10cwlsx2cvp7v9m7k.nar.zst current_part=801 requesting=100 time=2026-08-07T08:48:24.607Z level=INFO msg="Received additional part URLs" count=100 total_parts=900 time=2026-08-07T08:49:41.898Z level=INFO msg="Uploading 1 narinfos" time=2026-08-07T08:49:42.400Z level=INFO msg="Upload complete. (12m38.344s)"