Modularize hardware config and remove specific nix folder

modules/programs/drives.nix

@@ -0,0 +1,69 @@
+{ lib, config, options, ... }:
+let
+
+  driveModule = lib.types.submodule {
+    options = {
+      name = lib.mkOption {
+        type = lib.types.str;
+        description = ''
+          The path of the drive.
+          Note that a / is already added at the beginning.
+        '';
+        default = "";
+        example = "drive2";
+      };
+      drive = lib.mkOption {
+        type = lib.types.attrsOf lib.types.anything;
+        description = "The attrs of the drive";
+        default = { };
+        example = {
+          device = "/dev/disk/by-label/DRIVE2";
+          fsType = "ext4";
+          options = [
+            "noatime"
+            "nodiratime"
+            "discard"
+          ];
+        };
+      };
+    };
+  };
+in
+{
+  options.mods = {
+    extraDrives =
+      lib.mkOption {
+        default = [ ];
+        example = [
+          {
+            name = "drive2";
+            drive = {
+              device = "/dev/disk/by-label/DRIVE2";
+              fsType = "ext4";
+              options = [
+                "noatime"
+                "nodiratime"
+                "discard"
+              ];
+            };
+          }
+        ];
+        #  TODO:  how to make this work
+        # type = with lib.types; listOf (attrsOf driveModule);
+        type = with lib.types; listOf (attrsOf anything);
+        description = ''
+          Extra drives to add.
+        '';
+      };
+  };
+
+  config = (lib.optionalAttrs (options?fileSystems) {
+    fileSystems = builtins.listToAttrs
+      (map
+        ({ name, drive }: {
+          name = "/" + name;
+          value = drive;
+        })
+        config.mods.extraDrives);
+  });
+}