these 3 derivations will be built:
  /nix/store/vqih2ik2ncwbbl4pl1g7d1zxgqbwy49v-treefmt.toml.drv
  /nix/store/xajqjdwkhwgf52mswqngvzmf2hhlal0m-treefmt.drv
  /nix/store/kycnk5ywvfni3wbpwsz6vcf4kzypjlnm-treefmt-check.drv