switch nixpkgs version

flake.nix

@@ -2,7 +2,7 @@
     description = "Build Project Archimedes";
 
     inputs = {
-        nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+        nixpkgs.url = "github:nixos/nixpkgs/nixos-24.11";
         imgui = {
             url = "github:ocornut/imgui?ref=docking";
             flake = false;

src/main.cpp

@@ -2,6 +2,11 @@
 #include "App.h"
 
 int main(int argc, char* argv[]) {
+
+    if(!glfwInit()) {
+        std::cout << "Still no glfw!\n";
+        std::abort();
+    }
     App app(argc, argv);
     app.run();
 }