these 3 derivations will be built:
  /nix/store/m37dpya3g12v6ldwwdhc05dafd0nb4s7-treefmt.toml.drv
  /nix/store/m432sax8jpzgvmglh5zlgmg6y5cdkp9z-treefmt.drv
  /nix/store/zsz8i3fvkvp5hm2qf0jpfb8331028b2f-treefmt-check.drv
building '/nix/store/m37dpya3g12v6ldwwdhc05dafd0nb4s7-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/m432sax8jpzgvmglh5zlgmg6y5cdkp9z-treefmt.drv'
treefmt> structuredAttrs is enabled
building '/nix/store/zsz8i3fvkvp5hm2qf0jpfb8331028b2f-treefmt-check.drv'
treefmt-check> treefmt v2.6.0traversed 23 files
treefmt-check> emitted 20 files for processing
treefmt-check> formatted 20 files (0 changed) in 87ms

post-build step Route build to niks3: ok
Pushing mulatta/dagster-nix to https://niks3.mulatta.io
time=2026-09-15T06:38:00.263+09:00 level=INFO msg="Uploading 0 paths to niks3.mulatta.io (1 already cached)"
time=2026-09-15T06:38:00.784+09:00 level=INFO msg="Uploading 1 narinfos"
time=2026-09-15T06:38:01.267+09:00 level=INFO msg="Upload complete. (1.203s)"