update nix project config

.envrc

@@ -1 +1 @@
-use flake
+use nix --expr '(import <nixpkgs> {}).callPackage ./shell.nix {}'

default.nix

@@ -0,0 +1,25 @@
+{ buildGoModule, lib, callPackage, project-config? callPackage ./project-config.nix {}, ... }: buildGoModule {
+  pname = "demo-signaling-server";
+  version = "0.0.1";
+
+  nativeBuildInputs = project-config.buildTools;
+  buildInputs = project-config.libraries;
+
+  src = ./.;
+
+  # vendorHash = "";
+  vendorHash = "sha256-fxjQPK/6IWxnezix8aMMxw3+MZj8XxqnYD5Z9WUsdM4=";
+
+  preBuild = ''
+    go generate -v ./...
+  '';
+
+  GOFLAGS = ["-ldflags=-extldflags=-static" "-w"];
+
+  meta = with lib; {
+    description = "go project scaffold";
+    homepage = "https://git.jeffthecoder.xyz/public/os-flakes";
+    license = licenses.unlicense;
+    maintainers = [ ];
+  };
+}

flake.nix

@@ -1,49 +1,29 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/release-23.11";
+    nixpkgs.url = "nixpkgs/nixos-unstable";
   };
-  outputs = { nixpkgs, ... }: rec {
-    packages = nixpkgs.lib.genAttrs [ "x86_64-linux" "x86_64-darwin" ] (system:
-      let pkgs = import nixpkgs { inherit system; }; in {
-        default = pkgs.buildGoModule {
-          pname = "demo-signaling-server";
-          version = "0.0.1";
+  outputs = { nixpkgs, ... }:
+    let
+      systems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
+      foreachSystem = nixpkgs.lib.genAttrs systems;
+    in
+    {
+      packages = foreachSystem (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+        in
+        rec {
+          hello = pkgs.callPackage ./default.nix { };
 
-          nativeBuildInputs = with pkgs; [
-            protobuf
-            protoc-gen-go
-            protoc-gen-go-grpc
-          ];
-
-          preBuild = ''
-              go generate -v ./...
-          '';
-
-
-          src = ./.;
-
-          CGO_ENABLED = "0";
-          GOFLAGS = "-ldflags='-extldflags=-static -w -s";
-
-          vendorHash = "sha256-fxjQPK/6IWxnezix8aMMxw3+MZj8XxqnYD5Z9WUsdM4=";
-        };
-      });
-    devShells = nixpkgs.lib.genAttrs [ "x86_64-linux" "x86_64-darwin" ] (system:
-      let pkgs = import nixpkgs { inherit system; }; in {
-        default = packages."${system}".default.overrideAttrs (prevAttrs: {
-          GOFLAGS="";
-          nativeBuildInputs = prevAttrs.nativeBuildInputs ++ (with pkgs; [
-            gopls
-            golangci-lint
-            delve
-            gosec
-            go-outline
-            gotools
-            gomodifytags
-            impl
-            gotests
-          ]);
+          default = hello;
         });
-      });
-  };
+      devShells = foreachSystem
+        (system:
+          let
+            pkgs = import nixpkgs { inherit system; };
+          in
+          with pkgs;  {
+            default = pkgs.callPackage ./shell.nix { };
+          });
+    };
 }

project-config.nix

@@ -0,0 +1,43 @@
+{ gopls
+, golangci-lint
+, delve
+, gosec
+, go-outline
+, gotools
+, gomodifytags
+, impl
+, gotests
+, protobuf
+, protoc-gen-go
+, protoc-gen-go-grpc
+, ...
+}: {
+  buildTools = [
+    protobuf
+    protoc-gen-go
+    protoc-gen-go-grpc
+
+    # pkg-config
+
+    # protobuf
+    # protoc-gen-go
+    # protoc-gen-go-grpc
+
+    # pigeon # PEG parser
+    # ent-go
+
+    # k6 # load testing
+  ];
+  libraries = [ ];
+  devShellTools = [
+    gopls
+    golangci-lint
+    delve
+    gosec
+    go-outline
+    gotools
+    gomodifytags
+    impl
+    gotests
+  ];
+}

shell.nix

@@ -0,0 +1,7 @@
+{ callPackage, project-config ? callPackage ./project-config.nix { }, ... }: let
+  package = callPackage ./default.nix { inherit project-config; };
+in
+package.overrideAttrs (final: priv: { 
+  GOFLAGS = "";
+  nativeBuildInputs = priv.nativeBuildInputs ++ project-config.devShellTools;
+})