these 3 derivations will be built:
  /nix/store/jm3im2n7m5c4p2b3k4sf5n3q9lby5jgc-treefmt.toml.drv
  /nix/store/2napzn0jjzxyzjxdcv28faybb55ykcq1-treefmt.drv
  /nix/store/2awskbmknl54hwk3r8yapl1an0lji5v4-treefmt-check.drv
these 2 paths will be fetched (61.8 MiB download, 206.3 MiB unpacked):
  /nix/store/xz4i5wz5awpzndwjsb021s7q5hjxymrv-deno-2.9.6
  /nix/store/pv6ndgyh0kvzvs1l8cidrwgvcz755xjb-python3.14-mypy-2.1.0