configuring builders for x86-64-v3

systems/jeeves/default.nix

@@ -1,4 +1,4 @@
-{ inputs, ... }:
+{ inputs, lib, ... }:
 let
   vars = import ./vars.nix;
 in
@@ -26,6 +26,8 @@ in
     ./syncthing.nix
   ];
 
+  nix.settings.system-features = lib.mkAfter [ "gccarch-x86-64-v3" ];
+
   services = {
     openssh.ports = [ 629 ];
 

systems/jeeves/runners/nix_builder.nix

@@ -83,6 +83,7 @@ in
               useHostResolvConf = false;
             };
             nix.settings = {
+              system-features = lib.mkAfter [ "gccarch-x86-64-v3" ];
               trusted-substituters = [
                 "https://cache.nixos.org"
                 "https://cache.tmmworkshop.com"