feat: Declarative K3S node

profiles/disko/k3s.nix

@@ -0,0 +1,82 @@
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/sda";
+        imageSize = "32G"; # For test VMs
+        content = {
+          type = "gpt";
+          partitions = {
+            boot = {
+              size = "512M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "umask=0077" ];
+              };
+            };
+            zfs = {
+              end = "-4G";
+              content = {
+                type = "zfs";
+                pool = "tank";
+              };
+            };
+            swap = {
+              size = "100%";
+              content = {
+                type = "swap";
+                discardPolicy = "both";
+              };
+            };
+          };
+        };
+      };
+      longhorn = {
+        type = "disk";
+        device = "/dev/sdb";
+        imageSize = "64G"; # For longhorn storage
+        content = {
+          type = "gpt";
+          partitions = {
+            main = {
+              size = "100%";
+              content = {
+                type = "filesystem";
+                format = "ext4";
+              };
+            };
+          };
+        };
+      };
+    };
+    zpool = {
+      tank = {
+        type = "zpool";
+        rootFsOptions = {
+          compression = "zstd";
+        };
+        mountpoint = null;
+        postCreateHook = "zfs snapshot -r tank@blank && zfs hold -r blank tank@blank";
+
+        datasets = {
+          root = {
+            type = "zfs_fs";
+            mountpoint = "/";
+          };
+          nix = {
+            type = "zfs_fs";
+            mountpoint = "/nix";
+          };
+          persist = {
+            type = "zfs_fs";
+            mountpoint = "/persist";
+          };
+        };
+      };
+    };
+  };
+}

profiles/nixos/base.nix

@@ -75,6 +75,7 @@ in
       zip
       unzip
       tmux
+      unixtools.net-tools
     ];
   };
 }

profiles/nixos/vm.nix

@@ -20,7 +20,7 @@ in
       profiles.base.enable = true;
       disko = {
         enable = true;
-        profile = "vm";
+        profile = mkDefault "vm";
       };
       impermanence = {
         enable = true;