this derivation will be built:
  /nix/store/f64r88j998rximqv37rijac8xfjyxn1s-nss-datamesher-0.1.0.drv

shutting down@nix {"action":"msg","column":null,"file":null,"level":0,"line":null,"msg":"\u001b[31;1merror:\u001b[0m interrupted by the user","raw_msg":"interrupted by the user"}