fix

modules/pgbackrest.nix

@@ -21,7 +21,9 @@ in {
 			description = "Path to the environment file containing S3 credentials and cipher passphrase";
 		};
 
-		s3 = {
+		s3 = mkOption {
+			type = types.submodule {
+				options = {
 					endpoint = mkOption {
 						type = types.str;
 						default = "s3.eu-central-003.backblazeb2.com";
@@ -45,8 +47,14 @@ in {
 						description = "Path within the S3 bucket";
 					};
 				};
+			};
+			default = {};
+			description = "S3 storage configuration";
+		};
 
-		retention = {
+		retention = mkOption {
+			type = types.submodule {
+				options = {
 					full = mkOption {
 						type = types.int;
 						default = 7;
@@ -59,8 +67,14 @@ in {
 						description = "Number of differential backups to retain";
 					};
 				};
+			};
+			default = {};
+			description = "Backup retention configuration";
+		};
 
-		compression = {
+		compression = mkOption {
+			type = types.submodule {
+				options = {
 					type = mkOption {
 						type = types.str;
 						default = "zst";
@@ -73,6 +87,10 @@ in {
 						description = "Compression level";
 					};
 				};
+			};
+			default = {};
+			description = "Compression configuration";
+		};
 
 		processMax = mkOption {
 			type = types.int;
@@ -80,7 +98,9 @@ in {
 			description = "Maximum number of processes for parallel operations";
 		};
 
-		schedule = {
+		schedule = mkOption {
+			type = types.submodule {
+				options = {
 					full = mkOption {
 						type = types.str;
 						default = "daily";
@@ -94,6 +114,10 @@ in {
 					};
 				};
 			};
+			default = {};
+			description = "Backup schedule configuration";
+		};
+	};
 
 	config = mkIf cfg.enable (let
 		archivePushScript = pkgs.writeShellScript "pgbackrest-archive-push" ''