these 3 derivations will be built:
  /nix/store/1v1vdhkagh1ff9p2w1wizi74fj3khl39-treefmt.toml.drv
  /nix/store/b4zr01dhjfa9xzbfqv2zfz44jndrrzm5-treefmt.drv
  /nix/store/ffz00dgrm86a7y64alh2yvjf7jqjqjg3-treefmt-check.drv
this path will be fetched (10.9 MiB download, 30.5 MiB unpacked):
  /nix/store/qmrz7inmmlfmx1nghix8ymghh5yd9gnv-ruff-0.15.22