enforce new flake schema. formatting.

templates/container/.gitignore

@@ -0,0 +1,5 @@
+.direnv/
+.envrc
+.pre-commit-config.yaml
+result
+target

templates/container/flake.nix

@@ -2,10 +2,10 @@
   description = "Container NixOS configurations";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-25.11";
 
     synix.url = "git+https://git.sid.ovh/sid/synix.git?ref=release-25.11";
-    synix.imputs.nixpkgs.follows = "nixpkgs";
+    synix.inputs.nixpkgs.follows = "nixpkgs";
   };
 
   outputs =
@@ -17,42 +17,62 @@
     let
       inherit (self) outputs;
 
-      system = "x86_64-linux";
+      systems = [
+        "x86_64-linux"
+      ];
 
-      lib = nixpkgs.lib.extend (final: prev: inputs.synix.lib or { });
-    in
-    {
-      packages =
-        let
-          pkgs = nixpkgs.legacyPackages.${system};
-        in
-        import ./pkgs { inherit pkgs; };
+      lib = nixpkgs.lib.extend (_final: _prev: inputs.synix.lib or { });
 
-      overlays = import ./overlays { inherit (self) inputs; };
+      inherit (lib.helpers) mkPkgs;
 
-      devShells =
-        let
-          pkgs = nixpkgs.legacyPackages.${system};
-        in
-        {
-          default = pkgs.mkShell {
-            buildInputs = with pkgs; [
-              nixos-container
-              tmux
-            ];
-          };
-        };
+      forAllSystems =
+        function:
+        lib.genAttrs systems (
+          system:
+          function (mkPkgs {
+            inherit system;
+          })
+        );
 
-      nixosModules = import ./modules;
-
-      nixosConfigurations = {
-        container = nixpkgs.lib.nixosSystem {
-          inherit system;
-          modules = [ ./config ];
+      mkNixosConfiguration =
+        system: modules:
+        nixpkgs.lib.nixosSystem {
+          inherit system modules;
           specialArgs = {
             inherit inputs outputs lib;
           };
         };
+    in
+    {
+      packages = forAllSystems (pkgs: import ./pkgs { inherit pkgs; });
+
+      overlays = import ./overlays { inherit (self) inputs; };
+
+      devShells = forAllSystems (pkgs: {
+        default = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            nixos-container
+            tmux
+          ];
+        };
+      });
+
+      nixosModules = import ./modules;
+
+      nixosConfigurations = {
+        container = mkNixosConfiguration "x86_64-linux" [ ./config ];
       };
+
+      checks = forAllSystems (
+        pkgs:
+        let
+          inherit (pkgs.stdenv.hostPlatform) system;
+        in
+        {
+          inherit (inputs.synix.checks.${system}) pre-commit-check build-additions build-modifications;
+        }
+      );
+
+      inherit (inputs.synix) formatter;
     };
 }