A simple flake setup with tests and VM support

flake.nix

@@ -0,0 +1,53 @@
+{
+  description = "Flake to setup server using matrix communication protocol";
+
+  inputs = {
+
+    # stable and unstable nixpkgs
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.05"; 
+    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
+    
+    # partitioning and disk management
+    disko = {
+      url = "github:nix-community/disko";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    # secret management
+    sops = {
+      url = "github:Mic92/sops-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, nixpkgs-unstable, disko, sops, ... }@inputs: {
+    nixosConfigurations = {
+      # TODO replace hostname
+      matrix = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          disko.nixosModules.disko
+          sops.nixosModules.sops
+          ./nix/configuration.nix
+          ./nix/disko.nix
+        ];
+        specialArgs = { inherit inputs; };
+      };
+    };
+
+    # Add this section
+    checks.x86_64-linux = {
+      test1 = import ./nix/tests/test1.nix {
+        pkgs = nixpkgs.legacyPackages.x86_64-linux;
+      };
+    };
+
+    # Development shell for working with the configuration
+    # execute: nix develop or use direnv
+    devShells.x86_64-linux.default = nixpkgs.legacyPackages.x86_64-linux.mkShell {
+      buildInputs = with nixpkgs.legacyPackages.x86_64-linux; [
+        # git
+      ];
+    };
+  };
+}