these 3 derivations will be built:
  /nix/store/r9b0v9j0xb6g4ka87pm9ijhm1ddl4rds-treefmt.toml.drv
  /nix/store/297vw4msv2fi88k2f0wr64qgb385s1yh-treefmt.drv
  /nix/store/l8aq607kb79573cc4vfq87ynm4g9lr3r-treefmt-check.drv