these 3 derivations will be built:
  /nix/store/qwnnznldiwx4l32ifzw334bx4ygv028f-treefmt.toml.drv
  /nix/store/y1650r8b27gl38mv6q68yj0978irbbxh-treefmt.drv
  /nix/store/iisqm0w3945941ls16980iw9d3kdi6iw-treefmt-check.drv