these 3 derivations will be built:
  /nix/store/bxmfsrh4myv0mby8p07apan8528lwhpi-treefmt.toml.drv
  /nix/store/40ipdmdiq30zkgm4i5g6lvj0vqkxs5yq-treefmt.drv
  /nix/store/kgn6zmp6q59q9d4vgxdnkwsq0627g2ck-nix-shell.drv