diff --git a/flake.nix b/flake.nix
index 38975cab..7192e506 100644
--- a/flake.nix
+++ b/flake.nix
@@ -27,7 +27,10 @@
             ## opt-in. Maybe one day we will decide to have them everywhere.
             let
               inherit (builtins) concatStringsSep;
-              optin = [ "deployment" ];
+              optin = [
+                "deployment"
+                "services"
+              ];
               files = "^((" + concatStringsSep "|" optin + ")/.*\\.nix|[^/]*\\.nix)$";
             in
             {
diff --git a/services/fediversity/garage.nix b/services/fediversity/garage.nix
index 758a151c..16b57027 100644
--- a/services/fediversity/garage.nix
+++ b/services/fediversity/garage.nix
@@ -141,12 +141,8 @@ in
           types.submodule {
             # TODO: these should be managed as secrets, not in the nix store
             options = {
-              id = mkOption {
-                type = types.str;
-              };
-              secret = mkOption {
-                type = types.str;
-              };
+              id = mkOption { type = types.str; };
+              secret = mkOption { type = types.str; };
               # TODO: assert at least one of these is true
               # NOTE: this currently needs to be done at the top level module
               ensureAccess = mkOption {
@@ -184,9 +180,7 @@ in
       pkgs.awscli
     ];
 
-    networking.firewall.allowedTCPPorts = [
-      fedicfg.rpc.port
-    ];
+    networking.firewall.allowedTCPPorts = [ fedicfg.rpc.port ];
     services.garage = {
       enable = true;
       package = pkgs.garage_0_9;
diff --git a/services/fediversity/mastodon.nix b/services/fediversity/mastodon.nix
index 8b6e95bc..8cd74540 100644
--- a/services/fediversity/mastodon.nix
+++ b/services/fediversity/mastodon.nix
@@ -5,11 +5,7 @@ let
   };
 in
 
-{
-  config,
-  lib,
-  ...
-}:
+{ config, lib, ... }:
 
 lib.mkIf (config.fediversity.enable && config.fediversity.mastodon.enable) {
   #### garage setup
diff --git a/services/fediversity/peertube.nix b/services/fediversity/peertube.nix
index 4a4a07b2..1d1ea081 100644
--- a/services/fediversity/peertube.nix
+++ b/services/fediversity/peertube.nix
@@ -5,11 +5,7 @@ let
   };
 in
 
-{
-  config,
-  lib,
-  ...
-}:
+{ config, lib, ... }:
 
 lib.mkIf (config.fediversity.enable && config.fediversity.peertube.enable) {
   networking.firewall.allowedTCPPorts = [
diff --git a/services/flake.nix b/services/flake.nix
index aec006b7..b55b2812 100644
--- a/services/flake.nix
+++ b/services/flake.nix
@@ -128,9 +128,7 @@
       };
 
       devShells.${system}.default = pkgs.mkShell {
-        inputs = with pkgs; [
-          nil
-        ];
+        inputs = with pkgs; [ nil ];
         shellHook = self.checks.${system}.pre-commit.shellHook;
       };
     };
diff --git a/services/installer.nix b/services/installer.nix
index f87be582..a5f787ef 100644
--- a/services/installer.nix
+++ b/services/installer.nix
@@ -42,9 +42,7 @@ let
       };
     in
     {
-      imports = [
-        "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix"
-      ];
+      imports = [ "${nixpkgs}/nixos/modules/installer/cd-dvd/installation-cd-minimal.nix" ];
       nixpkgs.hostPlatform = "x86_64-linux";
       services.getty.autologinUser = lib.mkForce "root";
       programs.bash.loginShellInit = nixpkgs.lib.getExe bootstrap;
diff --git a/services/tests/mastodon-garage.nix b/services/tests/mastodon-garage.nix
index 75e269c3..242e8650 100644
--- a/services/tests/mastodon-garage.nix
+++ b/services/tests/mastodon-garage.nix
@@ -7,9 +7,7 @@ let
 
   seleniumScript =
     pkgs.writers.writePython3Bin "selenium-script"
-      {
-        libraries = with pkgs.python3Packages; [ selenium ];
-      }
+      { libraries = with pkgs.python3Packages; [ selenium ]; }
       ''
         from selenium import webdriver
         from selenium.webdriver.common.by import By
diff --git a/services/tests/pixelfed-garage.nix b/services/tests/pixelfed-garage.nix
index 746728bd..bdac4029 100644
--- a/services/tests/pixelfed-garage.nix
+++ b/services/tests/pixelfed-garage.nix
@@ -54,9 +54,7 @@ let
 
   seleniumScriptPostPicture =
     pkgs.writers.writePython3Bin "selenium-script-post-picture"
-      {
-        libraries = with pkgs.python3Packages; [ selenium ];
-      }
+      { libraries = with pkgs.python3Packages; [ selenium ]; }
       ''
         import os
         import time
@@ -99,9 +97,7 @@ let
 
   seleniumScriptGetSrc =
     pkgs.writers.writePython3Bin "selenium-script-get-src"
-      {
-        libraries = with pkgs.python3Packages; [ selenium ];
-      }
+      { libraries = with pkgs.python3Packages; [ selenium ]; }
       ''
         ${seleniumImports}
         ${seleniumSetup}
diff --git a/services/vm/pixelfed-vm.nix b/services/vm/pixelfed-vm.nix
index 8ec156a7..b5e820f7 100644
--- a/services/vm/pixelfed-vm.nix
+++ b/services/vm/pixelfed-vm.nix
@@ -1,8 +1,4 @@
-{
-  lib,
-  modulesPath,
-  ...
-}:
+{ lib, modulesPath, ... }:
 
 let
   inherit (lib) mkVMOverride;