nix machine / user configurations
1{ 2 nix.settings = { 3 substituters = [ "https://helix.cachix.org" ]; 4 trusted-public-keys = [ "helix.cachix.org-1:ejp9KQpR1FBI2onstMQ34yogDm4OgU2ru6lIwPvuCVs=" ]; 5 }; 6}