these 5 derivations will be built:
  /nix/store/dh1pcxsfvdlhx1m580z2vhv8gncv0y74-python3-3.14.7-env.drv
  /nix/store/2v7dn0mf60whym0c3079ql82v785jff1-mypy-check.drv
  /nix/store/3bpp7bc5c8hgg1pn7mk5iyhxx0ngv57v-treefmt.toml.drv
  /nix/store/pqhksnfk417rkvg03n8kqhb1iism4x2y-treefmt.drv
  /nix/store/9crxghskzl05dqfjnbiv24w1d4w3y2j2-treefmt-check.drv