these 3 derivations will be built:
  /nix/store/hj98rv4fc9avf1ywzrmj7vxdlbi0llw4-treefmt.toml.drv
  /nix/store/i4vp3c51fck7l76ds8dc7rblpgg1bhkz-treefmt.drv
  /nix/store/1g69fdlpynrxx1pfviygir3vf4mhxqjz-treefmt-check.drv
this path will be fetched (256.2 KiB download, 576.4 KiB unpacked):
  /nix/store/qxdmz1ff7qvf9iyi3p870zr71ya5lz6q-json2x-0.1.0
building '/nix/store/hj98rv4fc9avf1ywzrmj7vxdlbi0llw4-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/i4vp3c51fck7l76ds8dc7rblpgg1bhkz-treefmt.drv'
building '/nix/store/1g69fdlpynrxx1pfviygir3vf4mhxqjz-treefmt-check.drv'
treefmt-check> treefmt v2.5.0traversed 23 files
treefmt-check> emitted 20 files for processing
treefmt-check> formatted 20 files (0 changed) in 76ms

post-build step Route build to niks3: ok
Pushing mulatta/dagster-nix to https://niks3.mulatta.io
time=2026-08-28T11:05:38.741+09:00 level=INFO msg="Uploading 0 paths to niks3.mulatta.io (1 already cached)"
time=2026-08-28T11:05:39.276+09:00 level=INFO msg="Uploading 1 narinfos"
time=2026-08-28T11:05:39.741+09:00 level=INFO msg="Upload complete. (1.069s)"