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modules/services/postgres.nix

@@ -0,0 +1,23 @@
+{ pkgs, ... }:
+{
+    services.postgresql = {
+        enable = true;
+  	authentication = pkgs.lib.mkOverride 10 ''
+    		#type database  DBuser   auth-method optional_ident_map
+    		local sameuser  all      peer        map=superuser_map
+                local all       postgres peer  
+  	'';
+        identMap = ''
+                # ArbitraryMapName systemUser DBUser
+                superuser_map      root      postgres
+                superuser_map      postgres  postgres
+                # Let other names login as themselves
+                superuser_map      /^(.*)$   \1
+        '';
+    };
+   services.postgresqlBackup = {
+	enable = true;
+	location = "/var/backup/postgresql";
+	backupAll = true;
+   }; 
+}