these 3 derivations will be built:
  /nix/store/nvwz4r1ip6gy4x7fddmhg576p38l3a38-treefmt.toml.drv
  /nix/store/8z1acd7j9y6r834cd8cjyzwc9c95yd80-treefmt.drv
  /nix/store/h0gzf00vvw780bsvqhnpxl9n7rb800v1-treefmt-check.drv