these 3 derivations will be built:
  /nix/store/049vda3wha26sz30y5hg18r3cibr6ph9-treefmt.toml.drv
  /nix/store/m210sj3jpzz3712aaxp08dds6nk6b5rm-treefmt.drv
  /nix/store/r14hmz79cq8k31x4zi7ymb1ld14sr12z-format-check.drv
building '/nix/store/r14hmz79cq8k31x4zi7ymb1ld14sr12z-format-check.drv'
format-check> traversed 28 files
format-check> emitted 25 files for processing
format-check> formatted 25 files (0 changed) in 1.255s

post-build step Push selected repositories to niks3 cache: ok
Skipping niks3 push for mulatta/rag.nix