diff --git a/flake-parts/packages.nix b/flake-parts/packages.nix
index f8ce8a7a7..8ae436a66 100644
--- a/flake-parts/packages.nix
+++ b/flake-parts/packages.nix
@@ -1,8 +1,11 @@
-{ self, ... }: {
+{ self, lib, ... }: {
   flake.packages.x86_64-linux = {
-    inherit
-      (self.nixosConfigurations.installer.config.formats)
-      install-iso
-      ;
+    install-iso = (lib.nixosSystem {
+      system = "x86_64-linux";
+      modules = [
+        self.nixosModules.installer
+        self.inputs.nixos-generators.nixosModules.all-formats
+      ];
+    }).config.formats.install-iso;
   };
 }
diff --git a/flake.nix b/flake.nix
index 8e4ddfe1f..888582adf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -12,8 +12,13 @@
   };
 
   outputs = inputs @ { flake-parts, ... }:
-    flake-parts.lib.mkFlake { inherit inputs; } ({ lib, config, ... }: {
-      systems = lib.systems.flakeExposed;
+    flake-parts.lib.mkFlake { inherit inputs; } ({ ... }: {
+      systems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "aarch64-darwin"
+        "x86_64-darwin"
+      ];
       imports = [
         ./flake-parts/packages.nix
         ./flake-parts/formatting.nix
@@ -21,13 +26,6 @@
         ./pkgs/clan-cli/flake-module.nix
       ];
       flake = {
-        nixosConfigurations.installer = lib.nixosSystem {
-          system = "x86_64-linux";
-          modules = [
-            config.flake.nixosModules.installer
-            inputs.nixos-generators.nixosModules.all-formats
-          ];
-        };
         nixosModules = {
           installer = {
             imports = [
diff --git a/pkgs/clan-cli/tests/test_cli.py b/pkgs/clan-cli/tests/test_cli.py
index 4d6a4404e..2028602a1 100644
--- a/pkgs/clan-cli/tests/test_cli.py
+++ b/pkgs/clan-cli/tests/test_cli.py
@@ -1,10 +1,13 @@
 import sys
 
-import clan_cli
 import pytest
 
+import clan_cli
 
-def test_no_args(capsys: pytest.CaptureFixture, monkeypatch: pytest.MonkeyPatch) -> None:
+
+def test_no_args(
+    capsys: pytest.CaptureFixture, monkeypatch: pytest.MonkeyPatch
+) -> None:
     monkeypatch.setattr(sys, "argv", [""])
     clan_cli.main()
     captured = capsys.readouterr()
diff --git a/templates/python-project/tests/test_cli.py b/templates/python-project/tests/test_cli.py
index 8855774af..6c6f124c6 100644
--- a/templates/python-project/tests/test_cli.py
+++ b/templates/python-project/tests/test_cli.py
@@ -11,7 +11,9 @@ def test_no_args(capsys: pytest.CaptureFixture) -> None:
     assert captured.out.startswith("usage:")
 
 
-def test_version(capsys: pytest.CaptureFixture, monkeypatch: pytest.MonkeyPatch) -> None:
+def test_version(
+    capsys: pytest.CaptureFixture, monkeypatch: pytest.MonkeyPatch
+) -> None:
     monkeypatch.setattr(sys, "argv", ["", "--version"])
     my_tool.my_cli()
     captured = capsys.readouterr()