these 3 derivations will be built:
  /nix/store/2ph0f549mczfs1aix3mwkfc1x14nsx3a-treefmt.toml.drv
  /nix/store/2l60msfd226flz1xk85mrfhwk0gg7fyy-treefmt.drv
  /nix/store/9dsxdyc842vsfdbl6pc4jfj55i4nxd90-treefmt-check.drv