these 3 derivations will be built:
  /nix/store/5miiw5b0cj12ks2h9xmlwz7hgv3mgw71-treefmt.toml.drv
  /nix/store/np734gs6kkkr40jpmziyr794b1wcnym8-treefmt.drv
  /nix/store/h0nhva65ycgsb66v16fgq1ypxaypf8z4-treefmt-check.drv
this path will be fetched (256.1 KiB download, 576.4 KiB unpacked):
  /nix/store/dpmcfbn8g12ir6svmqf44yg6frq6wyaz-json2x-0.1.0
building '/nix/store/5miiw5b0cj12ks2h9xmlwz7hgv3mgw71-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/np734gs6kkkr40jpmziyr794b1wcnym8-treefmt.drv'
building '/nix/store/h0nhva65ycgsb66v16fgq1ypxaypf8z4-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 73ms

post-build step Route build to niks3: ok
Pushing mulatta/dagster-nix to https://niks3.mulatta.io
time=2026-09-13T05:20:09.324+09:00 level=INFO msg="Uploading 0 paths to niks3.mulatta.io (1 already cached)"
time=2026-09-13T05:20:09.913+09:00 level=INFO msg="Uploading 1 narinfos"
time=2026-09-13T05:20:10.346+09:00 level=INFO msg="Upload complete. (1.093s)"