these 3 derivations will be built:
  /nix/store/h8mzmxj2jg9ggcz9hz3yq29azy5d3akn-treefmt.toml.drv
  /nix/store/z2gndxy81zrmc7m9d52sw1hk4cnv9036-treefmt.drv
  /nix/store/c80bqxaypy0dcslhbi1pb8n8pnbcav34-treefmt-check.drv