this derivation will be built:
  /nix/store/4b2ihafh6cy7jd1p79qk305hyn8id0rk-bernstein-3.7.1.drv
this path will be fetched (524.8 KiB download, 2.9 MiB unpacked):
  /nix/store/jqn3ig03g4r72hag26dspvp8chifnnhq-python3.14-mcp-1.27.1