these 3 derivations will be built:
  /nix/store/vzg9wx736g8h1h4lm43cizn29v97b5r8-treefmt.toml.drv
  /nix/store/glajq3qqvcmvycsgzai8h0q1jrxm8fg9-treefmt.drv
  /nix/store/pnwpi95fzhyprqsryc7r253j5jvn2av1-treefmt-check.drv