these 4 derivations will be built:
  /nix/store/lfmys1k76rxqpmjd4kqm976y7774z5wb-etc-nix-registry.json.drv
  /nix/store/r1i68p01jzw3zgqa1m0vgzc8vgcxhayx-etc.drv
  /nix/store/77gnpgj0xkgin1f3r7zkn6p0dnwh4n63-activate.drv
  /nix/store/svxqw2bk2rg72bz5in7fapmz5011mgmx-nixos-system-prefect-26.11.19800101.8be7bd0.drv
building '/nix/store/lfmys1k76rxqpmjd4kqm976y7774z5wb-etc-nix-registry.json.drv'
building '/nix/store/r1i68p01jzw3zgqa1m0vgzc8vgcxhayx-etc.drv'
building '/nix/store/77gnpgj0xkgin1f3r7zkn6p0dnwh4n63-activate.drv'
building '/nix/store/svxqw2bk2rg72bz5in7fapmz5011mgmx-nixos-system-prefect-26.11.19800101.8be7bd0.drv'
nixos-system-prefect-26.11.19800101.8be7bd0> structuredAttrs is enabled

post-build step Upload to niks3: ok
time=2026-08-16T14:27:18.162-04:00 level=INFO msg="Uploading 4 paths to niks3.fennec-cichlid.ts.net (945 already cached)"
time=2026-08-16T14:27:18.162-04:00 level=INFO msg="Uploading 3ldjrm3gs0vxnqylblib002sbl75ndxj-etc (91.7KB)"
time=2026-08-16T14:27:18.162-04:00 level=INFO msg="Uploading yi93fy026a8qyzr31k9a47z1pq004pjf-etc-nix-registry.json (6.9KB)"
time=2026-08-16T14:27:18.162-04:00 level=INFO msg="Uploading lv9jhiag1wkp5gmawhfq91b74q58p00r-nixos-system-prefect-26.11.19800101.8be7bd0 (247.1KB)"
time=2026-08-16T14:27:18.162-04:00 level=INFO msg="Uploading g7ia3szp7smmg2x2h5r79zbjbq3xdy0z-source (562.0KB)"
time=2026-08-16T14:27:18.879-04:00 level=INFO msg="Uploading 4 narinfos"
time=2026-08-16T14:27:19.258-04:00 level=INFO msg="Upload complete. (1.729s)"