these 2 derivations will be built:
  /nix/store/7k6inrb5f20r9pgr758pagzcxh0c034v-bernstein-3.20.0.drv
  /nix/store/ghiqkxzkbxiwp1m56h28x6a48fqvhzdi-check-bernstein.drv
this path will be fetched (538.7 KiB download, 3.0 MiB unpacked):
  /nix/store/ll9l20hh4a9yzc9dr06pz0pxj5jzyyrl-python3.14-mcp-1.29.0