these 3 derivations will be built:
  /nix/store/hnflnxl6r8xangiip6q9fbh9k13v2241-treefmt.toml.drv
  /nix/store/zlqfs65ivm8nry0mfnbp972gjrli3z0c-treefmt.drv
  /nix/store/8qvqa9zsabvwgvqsf9pzf46aawc9l2mf-clan.drv