these 13 derivations will be built:
  /nix/store/03fp68fnqnsns0wpn9k0253ml4z9ac3q-issue.drv
  /nix/store/qvf7433xwmdrr1x6h602wzbqdp4h4s7x-etc-os-release.drv
  /nix/store/fn51r8pc2jimwnwclf4xx0jllf8b5930-shutdown-ramfs-contents.json.drv
  /nix/store/fm0jbllvdsa9b501sxshyh4b93yzxfd9-unit-generate-shutdown-ramfs.service.drv
  /nix/store/qnb4krxmzinppci7fazzciy08dzbsn1z-system-units.drv
  /nix/store/bh51gvzqqhk5llfy2c8ankhkz85dm5qi-etc.drv
  /nix/store/f0cavs76iw68fhqz1dyd6jr2sc6bi7rl-activate.drv
  /nix/store/xqqgn7zz585b8mq69p97iff5p42n4ccd-boot.json.drv
  /nix/store/8m5g7hbmy30i6zqp4bm6ciipxmc61r1r-nixos-system-trynixos-26.11.20260919.20b1ddd.drv
  /nix/store/3i05nw9yr4hc5vwngk6i0mbjmyph1wsr-closure-info.drv
  /nix/store/3gj5p48157aabl8s1n4kj8n9bh5fsc9r-trynixos-store.squashfs.drv
  /nix/store/nvbgjwr21ifsyc1ry033ms3mvyy0w4mb-isolinux.cfg.drv
  /nix/store/hnq58sir5lby2i0j65zjlp3xj47175sb-trynixos.iso.drv
building '/nix/store/xqqgn7zz585b8mq69p97iff5p42n4ccd-boot.json.drv'
building '/nix/store/qvf7433xwmdrr1x6h602wzbqdp4h4s7x-etc-os-release.drv'
building '/nix/store/03fp68fnqnsns0wpn9k0253ml4z9ac3q-issue.drv'
boot.json> structuredAttrs is enabled
etc-os-release> structuredAttrs is enabled
issue> structuredAttrs is enabled
building '/nix/store/fn51r8pc2jimwnwclf4xx0jllf8b5930-shutdown-ramfs-contents.json.drv'
shutdown-ramfs-contents.json> structuredAttrs is enabled
building '/nix/store/fm0jbllvdsa9b501sxshyh4b93yzxfd9-unit-generate-shutdown-ramfs.service.drv'
unit-generate-shutdown-ramfs.service> structuredAttrs is enabled
building '/nix/store/qnb4krxmzinppci7fazzciy08dzbsn1z-system-units.drv'
building '/nix/store/bh51gvzqqhk5llfy2c8ankhkz85dm5qi-etc.drv'
building '/nix/store/f0cavs76iw68fhqz1dyd6jr2sc6bi7rl-activate.drv'
activate> structuredAttrs is enabled
building '/nix/store/8m5g7hbmy30i6zqp4bm6ciipxmc61r1r-nixos-system-trynixos-26.11.20260919.20b1ddd.drv'
nixos-system-trynixos-26.11.20260919.20b1ddd> structuredAttrs is enabled
building '/nix/store/3i05nw9yr4hc5vwngk6i0mbjmyph1wsr-closure-info.drv'
building '/nix/store/nvbgjwr21ifsyc1ry033ms3mvyy0w4mb-isolinux.cfg.drv'
closure-info> structuredAttrs is enabled
isolinux.cfg> structuredAttrs is enabled
building '/nix/store/3gj5p48157aabl8s1n4kj8n9bh5fsc9r-trynixos-store.squashfs.drv'
trynixos-store.squashfs> Parallel mksquashfs: Using 32 processors
trynixos-store.squashfs> Creating 4.0 filesystem on /nix/store/183bwb01y0bvip3j853asdm0d78ywjvc-trynixos-store.squashfs, block size 1048576.
trynixos-store.squashfs> 
trynixos-store.squashfs> 
trynixos-store.squashfs> Exportable Squashfs 4.0 filesystem, zstd compressed, data block size 1048576
trynixos-store.squashfs> 	compressed data, compressed metadata, compressed fragments,
trynixos-store.squashfs> 	compressed xattrs, compressed ids
trynixos-store.squashfs> 	duplicates are removed
trynixos-store.squashfs> Filesystem size 50224.48 Kbytes (49.05 Mbytes)
trynixos-store.squashfs> 	27.89% of uncompressed filesystem size (180079.37 Kbytes)
trynixos-store.squashfs> Inode table size 111502 bytes (108.89 Kbytes)
trynixos-store.squashfs> 	20.13% of uncompressed inode table size (553877 bytes)
trynixos-store.squashfs> Directory table size 115996 bytes (113.28 Kbytes)
trynixos-store.squashfs> 	47.62% of uncompressed directory table size (243562 bytes)
trynixos-store.squashfs> Number of duplicate files found 642
trynixos-store.squashfs> Number of inodes 12180
trynixos-store.squashfs> Number of files 7112
trynixos-store.squashfs> Number of fragments 112
trynixos-store.squashfs> Number of symbolic links 3837
trynixos-store.squashfs> Number of device nodes 0
trynixos-store.squashfs> Number of fifo nodes 0
trynixos-store.squashfs> Number of socket nodes 0
trynixos-store.squashfs> Number of directories 1231
trynixos-store.squashfs> Number of hard-links 0
trynixos-store.squashfs> Number of ids (unique uids + gids) 1
trynixos-store.squashfs> Number of uids 1
trynixos-store.squashfs> 	root (0)
trynixos-store.squashfs> Number of gids 1
trynixos-store.squashfs> 	root (0)
building '/nix/store/hnq58sir5lby2i0j65zjlp3xj47175sb-trynixos.iso.drv'
trynixos.iso> structuredAttrs is enabled
trynixos.iso> copying the boot image /nix/store/if8jjnfipiqjklaw995r3gvqiyy2rjz8-syslinux-unstable-2019-02-07/share/syslinux/isolinux.bin
trynixos.iso> xorriso 1.5.8.pl02 : RockRidge filesystem manipulator, libburnia project.
trynixos.iso> 
trynixos.iso> xorriso : NOTE : Environment variable SOURCE_DATE_EPOCH encountered with value 315532800
trynixos.iso> Drive current: -outdev 'stdio:/nix/store/0x3j0m5z4x51xqaqryl468fxylmlln2s-trynixos.iso/iso/trynixos.iso'
trynixos.iso> Media current: stdio file, overwriteable
trynixos.iso> Media status : is blank
trynixos.iso> Media summary: 0 sessions, 0 data blocks, 0 data,  862g free
trynixos.iso> xorriso : UPDATE :       6 files added in 1 seconds
trynixos.iso> Added 6 items from file 'pathlist'
trynixos.iso> xorriso : UPDATE :       6 files added in 1 seconds
trynixos.iso> xorriso : UPDATE :  96.86% done
trynixos.iso> ISO image produced: 31701 sectors
trynixos.iso> Written to medium : 31701 sectors at LBA 0
trynixos.iso> Writing to 'stdio:/nix/store/0x3j0m5z4x51xqaqryl468fxylmlln2s-trynixos.iso/iso/trynixos.iso' completed successfully.
trynixos.iso> 

post-build step Upload to niks3: ok
time=2026-09-20T05:13:58.516Z level=INFO msg="Uploading 1 paths to 127.0.0.1 (0 already cached)"
time=2026-09-20T05:13:58.516Z level=INFO msg="Uploading 0x3j0m5z4x51xqaqryl468fxylmlln2s-trynixos.iso (61.9MB)"
time=2026-09-20T05:14:03.285Z level=INFO msg="Uploading 1 narinfos"
time=2026-09-20T05:14:03.471Z level=INFO msg="Upload complete. (5.006s)"