these 2 derivations will be built:
  /nix/store/azdl2jsb0lv2a8khmsi4d2pdnfi53y4v-python3-3.14.7-env.drv
  /nix/store/fgd536idwy4yff3p66my1fcwjrxqpm3i-calendar-mcp.drv
building '/nix/store/azdl2jsb0lv2a8khmsi4d2pdnfi53y4v-python3-3.14.7-env.drv'
python3-3.14.7-env> structuredAttrs is enabled
python3-3.14.7-env> created 346 symlinks in user environment
building '/nix/store/fgd536idwy4yff3p66my1fcwjrxqpm3i-calendar-mcp.drv'