these 3 derivations will be built:
  /nix/store/4yqdzmkqx2s0q3i1w6gmy08la1jpcrgn-treefmt.toml.drv
  /nix/store/ax1xa60cag3l53df81xczlsk19xpgrz1-treefmt.drv
  /nix/store/2lcas3viawacfig2wdjq38c1pj39mg7b-treefmt-check.drv