diff --git a/flake.nix b/flake.nix
index 073e079..2caf8d5 100755
--- a/flake.nix
+++ b/flake.nix
@@ -169,9 +169,19 @@
                 gcc
             ];
 
+            buildInputs = with pkgs; [
+                glfw
+            ];
+
             buildPhase = ''
                 g++ \
                 modules/TestImgui/src/*.cpp src/App.cpp \
+                $imgui/backends/imgui_impl_glfw.cpp \
+                $imgui/backends/imgui_impl_opengl.cpp \
+                utils/Renderer/*.cpp utils/Renderer/RendererOpenGL/*.cpp \
+                utils/Window/*.cpp utils/Window/WindowGLFW/*.cpp \
+                -DRENDERER_OPENGL \
+                -DWINDOW_GLFW \
                 -fpic -shared \
                 -I src -I include \
                 -Wall \
diff --git a/utils/Renderer/Renderer.h b/utils/Renderer/Renderer.h
index c6dcba8..f27d003 100644
--- a/utils/Renderer/Renderer.h
+++ b/utils/Renderer/Renderer.h
@@ -3,7 +3,6 @@
 
 #include "Archimedes.h"
 
-#define RENDERER_OPENGL
 #include "RendererOpenGL/RendererOpenGL.h"
 
 namespace Archimedes {
diff --git a/utils/Window/WindowGLFW/WindowGLFW.h b/utils/Window/WindowGLFW/WindowGLFW.h
index 047f4d6..a811d60 100644
--- a/utils/Window/WindowGLFW/WindowGLFW.h
+++ b/utils/Window/WindowGLFW/WindowGLFW.h
@@ -1,3 +1,6 @@
+#ifdef WINDOW_GLFW
+#undef WINDOW_GLFW
+
 #include "Archimedes.h"
 
 #include <GLFW/glfw3.h>
@@ -25,3 +28,5 @@ namespace Archimedes {
 
     typedef WindowGLFW WindowImpl;
 }
+
+#endif