challenger: move more services from voyager: calibre-web, calibre-server, komga, nextcloud, postgres, timemachine

hosts/challenger/services/postgres.nix

@@ -0,0 +1,21 @@
+{ config, pkgs, lib, ... }:
+{
+  services.postgresql = {
+    enable = true;
+    /* enableTCPIP = true; # Expose on the network */
+    authentication = pkgs.lib.mkOverride 10 ''
+     local all all trust
+     host all all 127.0.0.1/32 trust
+     host all all ::1/128 trust
+    '';
+  };
+
+  services.postgresqlBackup = {
+    enable = true;
+    location = "/var/backup/postgres";
+    startAt = "*-*-* 03:15:00";
+    backupAll = true;
+  };
+
+  environment.systemPackages = [ config.services.postgresql.package ];
+}