Rename modules directory system to nixos

modules/nixos/services/restic/restore.nix

@@ -0,0 +1,66 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  backupsWithRestoreCommand =
+    config.custom.services.restic.backups
+    |> lib.attrValues
+    |> lib.filter (backup: backup.enable && backup.restoreCommand.enable);
+in
+{
+  options.custom.services.restic.backups = lib.mkOption {
+    type = lib.types.attrsOf (
+      lib.types.submodule {
+        options.restoreCommand = {
+          enable = lib.mkEnableOption "" // {
+            default = true;
+          };
+          preRestore = lib.mkOption {
+            type = lib.types.str;
+            default = "";
+          };
+          postRestore = lib.mkOption {
+            type = lib.types.str;
+            default = "";
+          };
+        };
+      }
+    );
+  };
+
+  config = {
+    environment.systemPackages =
+      let
+        restoreScripts =
+          backupsWithRestoreCommand
+          |> lib.map (
+            backup:
+            let
+              inherit (backup) name conflictingService;
+              inherit (backup.restoreCommand) preRestore postRestore;
+              hasConflictingService = conflictingService != null;
+            in
+            pkgs.writeShellApplication {
+              name = "restic-restore-${name}";
+              text = ''
+                ${lib.optionalString hasConflictingService "systemctl stop ${conflictingService}"}
+                ${preRestore}
+                restic-${name} restore latest --target /
+                ${postRestore}
+                ${lib.optionalString hasConflictingService "systemctl start ${conflictingService}"}
+              '';
+            }
+          );
+
+        restoreAllScript = pkgs.writeShellApplication {
+          name = "restic-restore-all";
+          text =
+            backupsWithRestoreCommand |> lib.map (backup: "restic-restore-${backup.name}") |> lib.concatLines;
+        };
+      in
+      restoreScripts ++ [ restoreAllScript ];
+  };
+}