Do not encrypt zfs root & add lapetus script

hosts/nixos/lapetus/filesystems/default.nix

@@ -8,8 +8,9 @@
   # Mark a bunch of paths as needed for boot
   fileSystems = lib.attrsets.genAttrs
     [ "/" "/nix" "/persist/data" "/persist/state" "/persist/local/cache" "/boot" ]
-    (_: {
+    (p: {
       neededForBoot = true;
-      depends = [ "/hermes" ];
+      # We need the extra check to allow nix to topologically sort everything
+      depends = lib.mkIf (p != "/") [ "/hermes" ];
     });
 }

hosts/nixos/lapetus/filesystems/partitions.nix

@@ -52,28 +52,30 @@
         rootFsOptions = {
           compression = "lz4";
           "com.sun:auto-snapshot" = "false";
-          encryption = "aes-256-gcm";
-          keyformat = "passphrase";
-          keylocation = "file:///hermes/secrets/lapetus/disk.key";
         };
 
         # {{{ Datasets
         datasets = {
-          "root/persist/data" = {
+          "secure" = {
+            encryption = "aes-256-gcm";
+            keyformat = "passphrase";
+            keylocation = "file:///hermes/secrets/lapetus/disk.key";
+          };
+          "secure/persist/data" = {
             type = "zfs_fs";
             mountpoint = "/persist/data";
             options."com.sun:auto-snapshot" = "true";
           };
-          "root/persist/state" = {
+          "secure/persist/state" = {
             type = "zfs_fs";
             mountpoint = "/persist/state";
             options."com.sun:auto-snapshot" = "true";
           };
-          "root/local/nix" = {
+          "secure/local/nix" = {
             type = "zfs_fs";
             mountpoint = "/nix";
           };
-          "root/local/cache" = {
+          "secure/local/cache" = {
             type = "zfs_fs";
             mountpoint = "/persist/local/cache";
           };

scripts/emergency-lapetus.sh

@@ -1,11 +1,45 @@
+# Check if at least one argument is provided
+if [ "$#" -eq 0 ]; then
+    echo "Usage: $0 <disko-mode> [action]"
+    exit 1
+fi
+
+# Ensure correct first argument type
+if [ "$1" != "disko" ] && [ "$1" != "mount" ]; then
+    echo "Disko action must be either 'disko' or 'mount'"
+    exit 1
+fi
+
+# Ensure correct second argument type
+if [ "$#" != "1" ] && [ "$2" != "install" ] && [ "$2" != "enter" ]; then
+    echo "Action must either be empty, 'install' or 'enter'"
+    exit 1
+fi
+
 echo "Entering shells..."
 exec nix-shell ./devshells/bootstrap/shell.nix
 exec nix shell disko
+
 echo "Mounting keys"
 sudo mkdir /hermes
 sudo mount /dev/disk/by-uuid/7FE7-CA68 /hermes
-echo "Importing zfs pool"
+
-sudo zpool import -lfR /mnt zroot
+echo "Running disko"
-echo "Mounting zfs filesystem"
+
-sudo disko --mode mount ./hosts/nixos/lapetus/filesystems/partitions.nix
+if [ "$1" -eq "mount" ]; then
+  sudo zpool import -lfR /mnt zroot
+fi
+
+sudo disko --mode $1 ./hosts/nixos/lapetus/filesystems/partitions.nix
+
+if [ "$2" = "install" ]; then
+  echo "Installing nixos"
+  sudo nixos-install --flake ".#lapetus"
+fi
+
+if [ "$2" = "enter" ]; then
+  echo "Entering nixos"
+  sudo nixos-enter --root /mnt
+fi
+
 echo "All done!"