this derivation will be built:
  /nix/store/y62ash50yc0zr6078ravh1rb93jbabs5-bernstein-3.14.159.drv
this path will be fetched (538.7 KiB download, 3.0 MiB unpacked):
  /nix/store/q6m1kp0w06vf2m4v8zx2c9i291h1ykvd-python3.14-mcp-1.29.0