5 files changed, 80 insertions, 23 deletions
diff --git a/templates/standard/default.nix b/templates/standard/default.nix
index b782208..f2b2028 100644
--- a/templates/standard/default.nix
+++ b/templates/standard/default.nix
@@ -7,6 +7,15 @@
   nixpkgs ? <nixpkgs>,
   system ? builtins.currentSystem,
 }:
-{
-  inherit (pkgs) hello;
-}
+
+let
+  inherit (pkgs) lib;
+
+  callPackage = lib.callPackageWith (pkgs // pkgs');
+
+  pkgs' = {
+    hello = callPackage ./nix/package.nix { };
+  };
+in
+
+pkgs'
diff --git a/templates/standard/flake.nix b/templates/standard/flake.nix
index 9c80e4b..23f6853 100644
--- a/templates/standard/flake.nix
+++ b/templates/standard/flake.nix
@@ -5,6 +5,7 @@
 
   outputs =
     { self, nixpkgs }:
+
     let
       inherit (nixpkgs) lib;
 
@@ -16,54 +17,57 @@
       ];
 
       forAllSystems = lib.genAttrs systems;
-      nixpkgsFor = nixpkgs.legacyPackages;
     in
+
     {
       checks = forAllSystems (
         system:
+
         let
-          pkgs = nixpkgsFor.${system};
+          pkgs = nixpkgs.legacyPackages.${system};
 
           mkCheck =
             name: deps: script:
-            pkgs.runCommand name { nativeBuildInputs = deps; } script;
+            pkgs.runCommand name { nativeBuildInputs = deps; } ''
+              ${script}
+              touch $out
+            '';
         in
-        {
-          nixfmt = mkCheck "check-nixfmt" [ pkgs.nixfmt-rfc-style ] ''
-            nixfmt --check ${self}
 
-            touch $out
-          '';
+        {
+          nixfmt = mkCheck "check-nixfmt" [ pkgs.nixfmt-rfc-style ] "nixfmt --check ${self}/**.nix";
         }
       );
 
       devShells = forAllSystems (
         system:
+
         let
-          pkgs = nixpkgsFor.${system};
+          pkgs = nixpkgs.legacyPackages.${system};
         in
-        {
-          default = pkgs.mkShell {
-            packages = [ pkgs.bash ];
 
-            inputsFrom = [ self.packages.${system}.hello ];
+        {
+          default = import ./shell.nix {
+            inherit pkgs;
+            inherit (self.packages.${system}) hello;
           };
         }
       );
 
-      formatter = forAllSystems (system: nixpkgsFor.${system}.nixfmt-rfc-style);
+      formatter = forAllSystems (system: nixpkgs.legacyPackages.${system}.nixfmt-rfc-style);
+
+      nixosModules.default = lib.modules.importApply ./nix/module.nix { inherit self; };
 
       packages = forAllSystems (
         system:
+
         let
-          pkgs = import ./default.nix {
-            pkgs = nixpkgsFor.${system};
-          };
+          pkgs = nixpkgs.legacyPackages.${system};
 
-          isAvailable = lib.meta.availableOn { inherit system; };
-          pkgs' = lib.filterAttrs (_: isAvailable) pkgs;
+          pkgs' = import ./default.nix { inherit pkgs; };
         in
-        pkgs // { default = pkgs'.hello or pkgs.emptyFile; }
+
+        pkgs' // { default = pkgs'.hello or pkgs.emptyFile; }
       );
     };
 }
diff --git a/templates/standard/nix/module.nix b/templates/standard/nix/module.nix
new file mode 100644
index 0000000..36e91ea
--- /dev/null
+++ b/templates/standard/nix/module.nix
@@ -0,0 +1,27 @@
+self:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  namespace = "myProgram";
+  cfg = config.services.${namespace};
+
+  inherit (pkgs.stdenv.hostPlatform) system;
+  packages = self.packages.${system} or throw "myProgram: ${system} is not supported";
+in
+
+{
+  options.services.${namespace} = {
+    enable = lib.mkEnableOption "something amazing";
+
+    package = lib.mkPackageOption packages "hello" { };
+  };
+
+  config = {
+    environment.systemPackages = [ cfg.package ];
+  };
+}
diff --git a/templates/standard/nix/package.nix b/templates/standard/nix/package.nix
new file mode 100644
index 0000000..46f9694
--- /dev/null
+++ b/templates/standard/nix/package.nix
@@ -0,0 +1 @@
+{ runCommand }: runCommand "hello" { } "echo 'hello' > $out"
diff --git a/templates/standard/shell.nix b/templates/standard/shell.nix
new file mode 100644
index 0000000..ded42bb
--- /dev/null
+++ b/templates/standard/shell.nix
@@ -0,0 +1,16 @@
+{
+  pkgs ? import nixpkgs {
+    inherit system;
+    config = { };
+    overlays = [ ];
+  },
+  nixpkgs ? <nixpkgs>,
+  system ? builtins.currentSystem,
+  hello ? (import ./default.nix { inherit pkgs; }).hello,
+}:
+
+pkgs.mkShell {
+  packages = [ pkgs.bash ];
+
+  inputsFrom = [ hello ];
+}