added template

flake.nix

@@ -1,5 +1,5 @@
 {
-  description = "ECP5 toolchain template project";
+  description = "LiteX overlay to provide those packages";
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
@@ -62,6 +62,10 @@
       packages = forAllSystems (
         pkgs: builtins.mapAttrs (name: value: pkgs.python3Packages.callPackage value { }) litex-pkgs
       );
+      templates.default = {
+        path = ./templates/default;
+        description = "basic template to get started with an ecp5";
+      };
 
       # example, not really something you should import unless you want everything.
       devShells = forAllSystems (pkgs: {

templates/default/flake.nix

@@ -3,20 +3,12 @@
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    litex-overlay.url = "git+https://git.saji.dev/saji/litex-overlay";
   };
 
   outputs =
-    inputs@{ nixpkgs, ... }:
+    inputs@{ nixpkgs, litex-overlay ... }:
     let
-      # litex-overlay = final: prev: {
-      #   pythonPackagesExtensions = prev.pythonPackagesExtensions ++ [
-      #     (python-final: python-prev: {
-      #       litex = python-final.callPackage (import ./litex.nix) { };
-      #       # can add more packages here!
-      #     })
-      #   ];
-      # };
-      litex-overlay = import ./litex;
       systems = [
         "x86_64-linux"
         "aarch64-linux"
@@ -32,7 +24,7 @@
               inherit system;
               config.allowUnfree = true;
               overlays = [
-                litex-overlay
+                litex-overlay.overlays.default
               ]; # patches, version pins, new pkgs here.
             }
           )