hosts/Haven/hardware-configuration.nix

@@ -9,17 +9,6 @@
 {
   imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
 
-  # Format and configure the disk using Disko
-  host.base.disko = {
-    enable = false;
-    primaryDisk = "nvme0n1";
-    enableTPM = true;
-    swapFile = {
-      enable = true;
-      size = "16G";
-    };
-  };
-
   boot = {
     supportedFilesystems = [ "btrfs" ];
     kernelModules = [ "kvm-amd" ];
@@ -49,6 +38,35 @@
     };
   };
 
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-uuid/2c76c660-3573-4622-8771-f23fa7ee302a";
+      fsType = "btrfs";
+      options = [ "subvol=@,compress=zstd" ];
+    };
+    "/home" = {
+      device = "/dev/disk/by-uuid/2c76c660-3573-4622-8771-f23fa7ee302a";
+      fsType = "btrfs";
+      options = [ "subvol=@home,compress=zstd" ];
+    };
+    "/swap" = {
+      device = "/dev/disk/by-uuid/2c76c660-3573-4622-8771-f23fa7ee302a";
+      fsType = "btrfs";
+      options = [ "subvol=@swap" ];
+    };
+    "/boot" = {
+      device = "/dev/disk/by-uuid/0120-A755";
+      fsType = "vfat";
+    };
+  };
+
+  swapDevices = [
+    {
+      device = "/swap/swapfile";
+      size = 16384;
+    }
+  ];
+
   networking = {
     useDHCP = lib.mkDefault true;
     hostName = "Haven";

hosts/Khanda/default.nix

@@ -21,6 +21,7 @@
     };
     users.aires = {
       enable = true;
+      autologin = true;
       services = {
         syncthing = {
           enable = true;

hosts/Khanda/hardware-configuration.nix

@@ -9,22 +9,8 @@
 {
   imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
 
-  # Format and configure the disk using Disko
-  host.base.disko = {
-    enable = false;
-    primaryDisk = "nvme0n1";
-    enableTPM = true;
-    swapFile = {
-      enable = true;
-      size = "16G";
-    };
-  };
-
   boot = {
     initrd = {
-      # Enable systemd for TPM auto-unlocking
-      systemd.enable = true;
-
       availableKernelModules = [
         "surface_aggregator"
         "surface_aggregator_registry"
@@ -92,6 +78,75 @@
     surface-control.enable = true;
   };
 
-  # Uncomment this to use the default kernel and skip rebuilding the kernel
+  # NOTE: Use a default kernel to skip full kernel rebuilds
   # boot.kernelPackages = lib.mkForce pkgs.linuxPackages_latest;
+
+  # Disk management
+  disko.enableConfig = true; # Disable while testing
+  disko.devices = {
+    disk = {
+      nvme0n1 = {
+        type = "disk";
+        device = "/dev/disk/by-id/nvme-MZ9L4256HCJQ-00BMV-SAMSUNG_S69VNE0X195093";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              priority = 1;
+              name = "ESP";
+              label = "boot";
+              size = "1G";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+            luks = {
+              size = "100%";
+              label = "nixos";
+              content = {
+                type = "luks";
+                name = "cryptroot";
+                settings = {
+                  allowDiscards = true;
+                  crypttabExtraOpts = ["tpm2-device=auto"];
+                };
+                content = {
+                  type = "btrfs";
+                  extraArgs = [ "-f" ]; # Override existing partition
+                  # Subvolumes must set a mountpoint in order to be mounted,
+                  # unless their parent is mounted
+                  subvolumes = {
+                    # Subvolume name is different from mountpoint
+                    "/root" = {
+                      mountOptions = [ "compress=zstd" "noatime" ];
+                      mountpoint = "/";
+                    };
+                    "/home" = {
+                      mountOptions = [ "compress=zstd" "noatime" ];
+                      mountpoint = "/home";
+                    };
+                    "/nix" = {
+                      mountOptions = [ "compress=zstd" "noatime" ];
+                      mountpoint = "/nix";
+                    };
+                    "/swap" = {
+                      mountpoint = "/.swap";
+                      swap.swapfile.size = "8G";
+                    };
+                    "/log" = {
+                      mountpoint = "/var/log";
+                      mountOptions = ["compress=zstd" "noatime"];
+                    };
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
 }

hosts/Shura/hardware-configuration.nix

@@ -9,17 +9,6 @@
 {
   imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
 
-  # Format and configure the disk using Disko
-  host.base.disko = {
-    enable = false;
-    primaryDisk = "nvme0n1";
-    enableTPM = true;
-    swapFile = {
-      enable = true;
-      size = "16G";
-    };
-  };
-
   # Configure the kernel.
   boot = {
     # First, install the latest Zen kernel
@@ -55,6 +44,28 @@
     kernelModules = [ "kvm-amd" ];
   };
 
+  fileSystems = {
+    "/" = {
+      device = "/dev/disk/by-uuid/b801fbea-4cb5-4255-bea9-a2ce77d1a1b7";
+      fsType = "btrfs";
+      options = [ "subvol=@,compress=zstd" ];
+    };
+    "/home" = {
+      device = "/dev/disk/by-uuid/b801fbea-4cb5-4255-bea9-a2ce77d1a1b7";
+      fsType = "btrfs";
+      options = [ "subvol=@home,compress=zstd" ];
+    };
+    "/swap" = {
+      device = "/dev/disk/by-uuid/b801fbea-4cb5-4255-bea9-a2ce77d1a1b7";
+      fsType = "btrfs";
+      options = [ "subvol=@swap" ];
+    };
+    "/boot" = {
+      device = "/dev/disk/by-uuid/AFCB-D880";
+      fsType = "vfat";
+    };
+  };
+
   networking = {
     # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
     # (the default) this is the recommended approach. When using systemd-networkd it's
@@ -68,4 +79,73 @@
   };
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+
+  # Disk management
+  disko.enableConfig = false; # Disable while testing
+  disko.devices = {
+    disk = {
+      nvme0n1 = {
+        type = "disk";
+        device = "";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              priority = 1;
+              name = "ESP";
+              label = "boot";
+              size = "1G";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+              };
+            };
+            luks = {
+              size = "100%";
+              label = "nixos";
+              content = {
+                type = "luks";
+                name = "cryptroot";
+                settings = {
+                  allowDiscards = true;
+                  crypttabExtraOpts = ["tpm2-device=auto"];
+                };
+                content = {
+                  type = "btrfs";
+                  extraArgs = [ "-f" ]; # Override existing partition
+                  # Subvolumes must set a mountpoint in order to be mounted,
+                  # unless their parent is mounted
+                  subvolumes = {
+                    # Subvolume name is different from mountpoint
+                    "/root" = {
+                      mountOptions = [ "compress=zstd" "noatime" ];
+                      mountpoint = "/";
+                    };
+                    "/home" = {
+                      mountOptions = [ "compress=zstd" "noatime" ];
+                      mountpoint = "/home";
+                    };
+                    "/nix" = {
+                      mountOptions = [ "compress=zstd" "noatime" ];
+                      mountpoint = "/nix";
+                    };
+                    "/swap" = {
+                      mountpoint = "/.swap";
+                      swap.swapfile.size = "16G";
+                    };
+                    "/log" = {
+                      mountpoint = "/var/log";
+                      mountOptions = ["compress=zstd" "noatime"];
+                    };
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
 }

modules/base/disko.nix

@@ -1,112 +0,0 @@
-{ lib, config, ... }:
-let
-  cfg = config.host.base.disko;
-in
-{
-  options = {
-    host.base.disko = {
-      enable = lib.mkEnableOption (lib.mdDoc "Enables Disko for disk & partition management.");
-      primaryDisk = lib.mkOption {
-        type = lib.types.attrs;
-        description = "The disk to format using Disko.";
-        default = {
-          name = "nvme0n1";
-          id = "";
-        };
-      };
-      enableTPM = lib.mkOption {
-        type = lib.types.bool;
-        description = "Enables TPM2 support.";
-        default = true;
-      };
-      swapFile = lib.mkOption {
-        type = lib.types.attrs;
-        description = "Swap file enabling and configuration.";
-        default = {
-          enable = true;
-          size = "8G";
-        };
-      };
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    # Disk management
-    disko.enableConfig = true;
-    disko.devices = {
-      disk = {
-        main = {
-          type = "disk";
-          device = "/dev/disk/by-id/${cfg.primaryDisk.id}";
-          content = {
-            type = "gpt";
-            partitions = {
-              ESP = {
-                priority = 1;
-                name = "ESP";
-                label = "boot";
-                size = "1G";
-                type = "EF00";
-                content = {
-                  type = "filesystem";
-                  format = "vfat";
-                  mountpoint = "/boot";
-                };
-              };
-              luks = {
-                size = "100%";
-                label = "nixos";
-                content = {
-                  type = "luks";
-                  name = "cryptroot";
-                  settings = {
-                    allowDiscards = true;
-                    crypttabExtraOpts = lib.mkIf cfg.enableTPM [ "tpm2-device=auto" ];
-                  };
-                  content = {
-                    type = "btrfs";
-                    extraArgs = [ "-f" ]; # Override existing partition
-                    subvolumes = {
-                      "/root" = {
-                        mountOptions = [
-                          "compress=zstd"
-                          "noatime"
-                        ];
-                        mountpoint = "/";
-                      };
-                      "/home" = {
-                        mountOptions = [
-                          "compress=zstd"
-                          "noatime"
-                        ];
-                        mountpoint = "/home";
-                      };
-                      "/nix" = {
-                        mountOptions = [
-                          "compress=zstd"
-                          "noatime"
-                        ];
-                        mountpoint = "/nix";
-                      };
-                      "/swap" = lib.mkIf cfg.swapFile.enable {
-                        mountpoint = "/.swap";
-                        swap.swapfile.size = cfg.swapFile.size;
-                      };
-                      "/log" = {
-                        mountpoint = "/var/log";
-                        mountOptions = [
-                          "compress=zstd"
-                          "noatime"
-                        ];
-                      };
-                    };
-                  };
-                };
-              };
-            };
-          };
-        };
-      };
-    };
-  };
-}

modules/base/system.nix

@@ -26,20 +26,12 @@
     };
   };
 
-  # Configure automatic updates for all hosts
-  host.services.autoUpgrade = {
-    enable = true;
-    configDir = config.secrets.nixConfigFolder;
-    onCalendar = "daily";
-    user = config.users.users.aires.name;
-  };
-
   services = {
     # Enable fwupd (firmware updater)
     fwupd.enable = true;
 
     # Autoscrub BTRFS partitions
-    btrfs.autoScrub = {
+    btrfs.autoScrub = lib.mkIf (config.fileSystems."/".fsType == "btrfs") {
       enable = true;
       interval = "weekly";
       fileSystems = [ "/" ];

modules/services/autoupgrade.nix

@@ -31,36 +31,9 @@ in
         type = lib.types.bool;
         description = "Enables automatic system updates.";
       };
-      branches = lib.mkOption {
-        type = lib.types.attrs;
-        description = "Which local and remote branches to compare.";
-        default = {
-          local = "main";
-          remote = "main";
-          remoteName = "origin";
-        };
-      };
-      configDir = lib.mkOption {
-        type = lib.types.str;
-        description = "Path where your NixOS configuration files are stored.";
-      };
-      onCalendar = lib.mkOption {
-        default = "daily";
-        type = lib.types.str;
-        description = "How frequently to run updates. See systemd.timer(5) and systemd.time(7) for configuration details.";
-      };
-      persistent = lib.mkOption {
-        default = true;
-        type = lib.types.bool;
-        description = "If true, the time when the service unit was last triggered is stored on disk. When the timer is activated, the service unit is triggered immediately if it would have been triggered at least once during the time when the timer was inactive. This is useful to catch up on missed runs of the service when the system was powered down.";
-      };
       pushUpdates = lib.mkEnableOption (
         lib.mdDoc "Updates the flake.lock file and pushes it back to the repo."
       );
-      user = lib.mkOption {
-        type = lib.types.str;
-        description = "The user who owns the configDir.";
-      };
     };
   };
 
@@ -73,30 +46,29 @@ in
           User = "root";
         };
         path = pathPkgs;
-        # Git diffing strategy courtesy of https://stackoverflow.com/a/40255467
         script = ''
-          cd ${cfg.configDir}
+          cd ${config.secrets.nixConfigFolder}
           # Check if there are changes from Git.
           echo "Pulling latest version..."
-          sudo -u ${cfg.user} git fetch
+          sudo -u aires git fetch
-          sudo -u ${cfg.user} git diff --quiet --exit-code ${cfg.branches.local} ${cfg.branches.remoteName}/${cfg.branches.remote} || true
+          sudo -u aires git diff --quiet --exit-code main origin/main || true
           # If we have changes (git diff returns 1), pull changes and run the update
           if [ $? -eq 1 ]; then
             echo "Updates found, running nixos-rebuild..."
-            sudo -u ${cfg.user} git pull --recurse-submodules
+            sudo -u aires git pull --recurse-submodules
-            nixos-rebuild switch --flake .
+            nh os switch
           else
             echo "No updates found. Exiting."
           fi
         '';
       };
-      systemd.timers."nixos-upgrade" = {
+      systemd.timers."nixos-upgrade-timer" = {
         wants = [ "network-online.target" ];
         after = [ "network-online.target" ];
         wantedBy = [ "timers.target" ];
         timerConfig = {
-          OnCalendar = cfg.onCalendar;
+          OnCalendar = "daily";
-          Persistent = cfg.persistent;
+          Persistent = "true";
           Unit = "nixos-upgrade.service";
         };
       };
@@ -106,12 +78,13 @@ in
       systemd.services."nixos-upgrade-flake" = {
         serviceConfig = {
           Type = "oneshot";
-          User = cfg.user;
+          User = config.users.users.aires.name;
         };
         path = pathPkgs;
+        # Git diffing strategy courtesy of https://stackoverflow.com/a/40255467
         script = ''
           set -eu
-          cd ${cfg.configDir}
+          cd ${config.secrets.nixConfigFolder}
           # Make sure we're up-to-date
           echo "Pulling the latest version..."
           git pull --recurse-submodules
@@ -120,13 +93,13 @@ in
         '';
       };
 
-      systemd.timers."nixos-upgrade-flake" = {
+      systemd.timers."nixos-upgrade-flake-timer" = {
         wants = [ "network-online.target" ];
         after = [ "network-online.target" ];
         wantedBy = [ "timers.target" ];
         timerConfig = {
-          OnCalendar = cfg.onCalendar;
+          OnCalendar = "daily";
-          Persistent = cfg.persistent;
+          Persistent = "true";
           Unit = "nixos-upgrade-flake.service";
         };
       };

modules/services/ssh.nix

@@ -8,7 +8,7 @@ in
     host.services.ssh = {
       enable = lib.mkEnableOption (lib.mdDoc "Enables SSH server.");
       ports = lib.mkOption {
-        default = [ 22 ];
+        default = [ ];
         type = lib.types.listOf lib.types.int;
         description = "Ports for SSH to listen on.";
       };