add basic home-manager test

checks/home-manager.nix

@@ -0,0 +1,14 @@
+{ config, ... }: {
+  imports = [
+    ../modules/home-manager/sops.nix
+  ];
+  home.stateVersion = "25.05";
+  home.username = "sops-user";
+  home.homeDirectory = "/home/sops-user";
+  home.enableNixpkgsReleaseCheck = false;
+
+  sops.age.generateKey = true;
+  sops.age.keyFile = "${config.home.homeDirectory}/.age-key.txt";
+  sops.secrets.test_key = { };
+  sops.defaultSopsFile = ../pkgs/sops-install-secrets/test-assets/secrets.yaml;
+}

flake.nix

@@ -6,13 +6,17 @@
   inputs.nix-darwin.url = "github:LnL7/nix-darwin";
   inputs.nix-darwin.inputs.nixpkgs.follows = "nixpkgs";
 
+  inputs.home-manager.url = "github:nix-community/home-manager";
+  inputs.home-manager.inputs.nixpkgs.follows = "nixpkgs";
+
   nixConfig.extra-substituters = ["https://cache.thalheim.io"];
   nixConfig.extra-trusted-public-keys = ["cache.thalheim.io-1:R7msbosLEZKrxk/lKxf9BTjOOH7Ax3H0Qj0/6wiHOgc="];
   outputs = {
     self,
     nixpkgs,
     nixpkgs-stable,
     nix-darwin,
+    home-manager,
   } @ inputs: let
     systems = [
       "x86_64-linux"
@@ -49,6 +53,16 @@
         inherit inputs;
       };
     };
+    legacyPackages = nixpkgs.lib.genAttrs ["x86_64-linux" "aarch64-linux" "aarch64-darwin"] (system: let
+       pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        homeConfigurations.sops = home-manager.lib.homeManagerConfiguration {
+          modules = [
+            ./checks/home-manager.nix
+          ];
+          inherit pkgs;
+        };
+    });
 
     packages = forAllSystems (system:
       import ./default.nix {