these 2 derivations will be built:
  /nix/store/lfydrq100s9qa1agg69zkh7d33n95jv1-treefmt.drv
  /nix/store/7qsic7pqghpbb19mhzarws9skxkzn8pg-treefmt-check.drv
this path will be fetched (0.0 KiB download, 0.8 KiB unpacked):
  /nix/store/2c51llfy4jx8ry5am904llmv93k2zyq9-treefmt.toml