these 3 derivations will be built:
  /nix/store/prh29y4v47wswra3yjmyg34cly39f04i-treefmt.toml.drv
  /nix/store/z053i5whndgfv40xwisnn7vvyzqyssfm-treefmt.drv
  /nix/store/24nr4r11kyba36ja664xbaqdjmdnqrzn-treefmt-check.drv
building '/nix/store/prh29y4v47wswra3yjmyg34cly39f04i-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/z053i5whndgfv40xwisnn7vvyzqyssfm-treefmt.drv'
treefmt> structuredAttrs is enabled
building '/nix/store/24nr4r11kyba36ja664xbaqdjmdnqrzn-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 82ms

post-build step Route build to niks3: ok
Pushing mulatta/dagster-nix to https://niks3.mulatta.io
time=2026-10-03T06:57:00.897+09:00 level=INFO msg="Uploading 0 paths to niks3.mulatta.io (1 already cached)"
time=2026-10-03T06:57:01.312+09:00 level=INFO msg="Uploading 1 narinfos"
time=2026-10-03T06:57:01.724+09:00 level=INFO msg="Upload complete. (957ms)"