adding gccarch-x86-64-v2 and gccarch-x86-64-v3 suport to all boxes This will be moved to athe ve file later

this fixes issues with file how the test intract with zfs file systems

common/global/nix.nix

@@ -31,6 +31,10 @@ in
         "flakes"
         "ca-derivations"
       ];
+      system-features = lib.mkAfter [
+        "gccarch-x86-64-v2"
+        "gccarch-x86-64-v3"
+      ];
       warn-dirty = false;
       flake-registry = ""; # disable global flake registries
       connect-timeout = 10;

systems/bob/hardware.nix

@@ -50,6 +50,11 @@
       fsType = "zfs";
     };
 
+    "/nix_build" = {
+      device = "root_pool/nix_build";
+      fsType = "zfs";
+    };
+
     "/var" = {
       device = "root_pool/var";
       fsType = "zfs";

systems/brain/hardware.nix

@@ -53,6 +53,11 @@
       fsType = "zfs";
     };
 
+    "/nix_build" = {
+      device = "root_pool/nix_build";
+      fsType = "zfs";
+    };
+
     "/boot" = {
       device = "/dev/disk/by-uuid/12CE-A600";
       fsType = "vfat";

systems/jeeves/default.nix

@@ -24,10 +24,6 @@ in
     ./runners
     ./syncthing.nix
   ];
-  nix.settings.system-features = lib.mkAfter [
-    "gccarch-x86-64-v2"
-    "gccarch-x86-64-v3"
-  ];
 
   services = {
     openssh.ports = [ 629 ];

systems/jeeves/hardware.nix

@@ -96,6 +96,11 @@ in
       fsType = "zfs";
     };
 
+    "/nix_build" = {
+      device = "root_pool/nix_build";
+      fsType = "zfs";
+    };
+
     "/var" = {
       device = "root_pool/var";
       fsType = "zfs";

systems/rhapsody-in-green/hardware.nix

@@ -34,14 +34,22 @@
       device = "root_pool/root";
       fsType = "zfs";
     };
+
     "/home" = {
       device = "root_pool/home";
       fsType = "zfs";
     };
+
+    "/nix_build" = {
+      device = "root_pool/nix_build";
+      fsType = "zfs";
+    };
+
     "/var" = {
       device = "root_pool/var";
       fsType = "zfs";
     };
+
     "/boot" = {
       device = "/dev/disk/by-uuid/12CE-A600";
       fsType = "vfat";