Support persisting data separately from config

home/impermanence/default.nix

@@ -25,5 +25,18 @@ in {
       # Docker, etc. Requires NixOS configuration programs.fuse.userAllowOther = true;
       allowOther = true;
     };
+
+    home.persistence."${cfg.persistentDataMountPoint}" = {
+      directories = [
+
+      ] ++ cfg.extraDataDirectories;
+
+      files = [
+
+      ] ++ cfg.extraDataFiles;
+
+      # See comment for this above
+      allowOther = true;
+    };
   };
 }

hosts/voyager/default.nix

@@ -53,14 +53,6 @@
           enable = true;
           persistentMountPoint = "/persist/home";
           extraDirectories = [
-            # Nixos flake
-            "dots"
-
-            # Personal data
-            "Downloads"
-            "Personal"
-            "Media"
-
             # Browsers
             ".mozilla"
             ".mullvad"
@@ -95,6 +87,20 @@
             ".config/pcmanfm-qt/default/recent-files.conf"
             ".config/qalculate/qalculate-gtk.cfg"
           ];
+
+          persistentDataMountPoint = "/data/Data";
+          extraDataDirectories = [
+            # Nixos flake
+            "dots"
+
+            # XDG user dirs
+            "Downloads"
+            "Media"
+
+            # Other personal data
+            "Personal"
+          ];
+          extraDataFiles = [];
         };
 
         # Configure automatic root subvolume wiping on boot from initrd

options/system/impermanence.nix

@@ -60,7 +60,7 @@ in
       extraDirectories = mkOption {
         default = [];
         type = types.listOf types.str;
-        example = literalExpression ''["Downloads"]'';
+        example = literalExpression ''[".config/chromium"]'';
         description = ''
           Additional directories in home to link to persistent storage.
         '';
@@ -70,13 +70,46 @@ in
         default = "/persist/home";
         description = ''
           Path to a persistent directory (usually a mount point to a
-          standalone partition / subvolume), which will hold the persistent
+          standalone partition or subvolume), which will hold the persistent
           system state files.
 
-          This does not expect any subdirectories, all of the persistent home files
+          This does not create any subdirectories, all of the persistent home files
           will be put directly in here. The user should be the owner of this direcotry.
         '';
       };
+
+      persistentDataMountPoint = mkOption {
+        default = "/persist/home";
+        description = ''
+          Path to a persistent directory (usually a mount point to a
+          standalone partition or subvolume), which will hold the persistent
+          data files.
+
+          This does not create any subdirectories, all of the persistent home files
+          fill be put directly in here. The user should be the owner of this directory.
+
+          If you don't wish to distinguish between data and system / configuration files, 
+          you can point this to the same location.
+        '';
+      };
+
+      extraDataFiles = mkOption {
+        default = [];
+        type = types.listOf types.str;
+        example = literalExpression ''["notes.txt"]'';
+        description = ''
+          Additional files in home to link to persistent data storage.
+        '';
+      };
+
+      extraDataDirectories = mkOption {
+        default = [];
+        type = types.listOf types.str;
+        example = literalExpression ''["Downloads"]'';
+        description = ''
+          Additional directories in home to link to persistent data storage.
+        '';
+      };
     };
 
     autoWipeBtrfs = let