1  _: {
 2    extra-substituters = [
 3      "http://buildnix.spacetime.technology:8000"
 4      "https://attic.spacetime.technology/buildnix"
 5    ];
 6    extra-trusted-public-keys = [
 7      "buildnix.spacetime.technology:cUI+2I7OJ/ufQg6Or2NP7mzPwdLQ7LUny80UxyFr25A="
 8      "buildnix:Ns8cOyVRHbn/FIui31sgg7b0LG4wNl+GmcOdTw8B73o="
 9    ];
10  }