these 5 derivations will be built: /nix/store/5921b9bfga877hgxqwplc6hijip7vdiz-isolinux.cfg.drv /nix/store/91bg6zb8w1jx49m8ijf0z4r6k4xdihx8-efi-directory.drv /nix/store/cwg65hbmmpn4hw9f8pyrxhsmxrrsyr8r-efi-image_eltorito.drv /nix/store/lisdw62gr0gj6hqb2zvv448fjsg4yi21-closure-info.drv /nix/store/rknk8a5sdb7qp2xqd5hbq4gc730dwh0f-spaces-os.iso.drv building '/nix/store/5921b9bfga877hgxqwplc6hijip7vdiz-isolinux.cfg.drv' building '/nix/store/lisdw62gr0gj6hqb2zvv448fjsg4yi21-closure-info.drv' building '/nix/store/91bg6zb8w1jx49m8ijf0z4r6k4xdihx8-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/sjqgxj6l7vgfa4hzj5n74p5f4p71dv54-efi-directory/EFI/BOOT/refind_x64.efi' building '/nix/store/cwg65hbmmpn4hw9f8pyrxhsmxrrsyr8r-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/73dz0cvdxmiggm2j6nnv5cb9br4wl1s1-efi-image_eltorito: 6 files, 719/1525 clusters building '/nix/store/rknk8a5sdb7qp2xqd5hbq4gc730dwh0f-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 9033091.90 Kbytes (8821.38 Mbytes) spaces-os.iso> 44.66% of uncompressed filesystem size (20228153.95 Kbytes) spaces-os.iso> Inode table size 5917239 bytes (5778.55 Kbytes) spaces-os.iso> 22.22% of uncompressed inode table size (26624831 bytes) spaces-os.iso> Directory table size 6778279 bytes (6619.41 Kbytes) spaces-os.iso> 35.45% of uncompressed directory table size (19118059 bytes) spaces-os.iso> Number of duplicate files found 106222 spaces-os.iso> Number of inodes 682461 spaces-os.iso> Number of files 448481 spaces-os.iso> Number of fragments 5537 spaces-os.iso> Number of symbolic links 86968 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 147012 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/adkpkqj5b3cs5vdv987105330gmnh6x4-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, 1101g 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 1133/255/63 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 : 0.58% done spaces-os.iso> xorriso : UPDATE : 4.08% done spaces-os.iso> xorriso : UPDATE : 9.12% done spaces-os.iso> xorriso : UPDATE : 13.69% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 19.17% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 24.73% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 30.19% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 35.34% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 40.88% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 45.77% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 50.97% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 56.80% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 61.78% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 66.89% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 72.35% done, estimate finish Wed Aug 12 08:48:21 2026 spaces-os.iso> xorriso : UPDATE : 76.96% done, estimate finish Wed Aug 12 08:48:22 2026 spaces-os.iso> xorriso : UPDATE : 82.33% done, estimate finish Wed Aug 12 08:48:21 2026 spaces-os.iso> xorriso : UPDATE : 87.40% done, estimate finish Wed Aug 12 08:48:21 2026 spaces-os.iso> xorriso : UPDATE : 91.77% done spaces-os.iso> xorriso : UPDATE : 95.29% done spaces-os.iso> xorriso : UPDATE : 99.05% done spaces-os.iso> ISO image produced: 4548307 sectors spaces-os.iso> Written to medium : 4548307 sectors at LBA 0 spaces-os.iso> Writing to 'stdio:/nix/store/adkpkqj5b3cs5vdv987105330gmnh6x4-spaces-os.iso/iso/spaces-os.iso' completed successfully. spaces-os.iso> post-build step Upload to niks3: ok time=2026-08-12T08:48:30.476Z level=INFO msg="Uploading 1 paths to 127.0.0.1 (0 already cached)" time=2026-08-12T08:48:30.476Z level=INFO msg="Uploading adkpkqj5b3cs5vdv987105330gmnh6x4-spaces-os.iso (8.7GB)" time=2026-08-12T08:49:37.803Z level=INFO msg="Requesting additional part URLs" object_key=nar/03zax5k2qfcddyd5vnmmnm8v6rw5qjvj52a88njwssnd1q9p2alc.nar.zst current_part=101 requesting=100 time=2026-08-12T08:49:37.806Z level=INFO msg="Received additional part URLs" count=100 total_parts=200 time=2026-08-12T08:50:43.863Z level=INFO msg="Requesting additional part URLs" object_key=nar/03zax5k2qfcddyd5vnmmnm8v6rw5qjvj52a88njwssnd1q9p2alc.nar.zst current_part=201 requesting=100 time=2026-08-12T08:50:43.867Z level=INFO msg="Received additional part URLs" count=100 total_parts=300 time=2026-08-12T08:51:58.241Z level=INFO msg="Requesting additional part URLs" object_key=nar/03zax5k2qfcddyd5vnmmnm8v6rw5qjvj52a88njwssnd1q9p2alc.nar.zst current_part=301 requesting=100 time=2026-08-12T08:51:58.245Z level=INFO msg="Received additional part URLs" count=100 total_parts=400 time=2026-08-12T08:53:03.939Z level=INFO msg="Requesting additional part URLs" object_key=nar/03zax5k2qfcddyd5vnmmnm8v6rw5qjvj52a88njwssnd1q9p2alc.nar.zst current_part=401 requesting=100 time=2026-08-12T08:53:03.942Z level=INFO msg="Received additional part URLs" count=100 total_parts=500 time=2026-08-12T08:54:11.515Z level=INFO msg="Requesting additional part URLs" object_key=nar/03zax5k2qfcddyd5vnmmnm8v6rw5qjvj52a88njwssnd1q9p2alc.nar.zst current_part=501 requesting=100 time=2026-08-12T08:54:11.518Z level=INFO msg="Received additional part URLs" count=100 total_parts=600 time=2026-08-12T08:55:22.051Z level=INFO msg="Requesting additional part URLs" object_key=nar/03zax5k2qfcddyd5vnmmnm8v6rw5qjvj52a88njwssnd1q9p2alc.nar.zst current_part=601 requesting=100 time=2026-08-12T08:55:22.055Z level=INFO msg="Received additional part URLs" count=100 total_parts=700 time=2026-08-12T08:56:35.900Z level=INFO msg="Requesting additional part URLs" object_key=nar/03zax5k2qfcddyd5vnmmnm8v6rw5qjvj52a88njwssnd1q9p2alc.nar.zst current_part=701 requesting=100 time=2026-08-12T08:56:35.904Z level=INFO msg="Received additional part URLs" count=100 total_parts=800 time=2026-08-12T08:57:43.469Z level=INFO msg="Requesting additional part URLs" object_key=nar/03zax5k2qfcddyd5vnmmnm8v6rw5qjvj52a88njwssnd1q9p2alc.nar.zst current_part=801 requesting=100 time=2026-08-12T08:57:43.472Z level=INFO msg="Received additional part URLs" count=100 total_parts=900 time=2026-08-12T08:58:46.021Z level=INFO msg="Uploading 1 narinfos" time=2026-08-12T08:58:46.552Z level=INFO msg="Upload complete. (10m16.464s)"