cmake usable?

flake.nix

@@ -26,9 +26,9 @@
         default = pkgs.mkShell {
           # The Nix packages provided in the environment
           packages = with pkgs; [
-            boost 
+            sfml
+            cmake
             gcc
-            poco 
           ];
         };
       });
@@ -36,18 +36,18 @@
       packages = forAllSystems ({ pkgs }: {
         default =
           let
-            binName = "SFML_Game";
+            binName = "SFMLtest";
             cppDependencies = with pkgs; [
-              boost
+              sfml
+              cmake
               gcc
-              poco
             ];
           in
           pkgs.stdenv.mkDerivation {
-            name = "SFML_Game";
+            name = "SFMLtest";
             src = self;
             buildInputs = cppDependencies;
-            buildPhase = "c++ -std=c++17 -o ${binName} ${./main.cpp} -lPocoFoundation -lboost_system";
+            buildPhase = "c++ -std=c++17 -o ${binName} ${./src/main.cpp} -lPocoFoundation -lboost_system";
             installPhase = ''
               mkdir -p $out/bin
               cp ${binName} $out/bin/

main.cpp

@@ -1,5 +0,0 @@
-#include <iostream>
-
-int main() {
-  std::cout << "Hello from Nix + C++!\n";
-}

src/CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.17)
+
+project(SFMLtest)
+
+set(CMAKE_CXX_STANDARD 20)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/bin/")
+
+find_package(SFML 2.5.1 COMPONENTS system graphics audio REQUIRED)
+
+file(GLOB_RECURSE
+	SOURCE
+	"${CMAKE_SOURCE_DIR}/src/**.cpp")
+
+add_executable(SFMLtest ${SOURCE})
+
+target_link_libraries(SFMLtest sfml-system sfml-window sfml-graphics sfml-audio)
+
+

src/main.cpp

@@ -0,0 +1,22 @@
+#include <SFML/Graphics.hpp>
+
+int main()
+{
+    sf::RenderWindow window(sf::VideoMode(640, 480), "SFML Application");
+    sf::CircleShape shape;
+    shape.setRadius(40.f);
+    shape.setPosition(100.f, 100.f);
+    shape.setFillColor(sf::Color::Cyan);
+    while (window.isOpen())
+    {
+    sf::Event event;
+    while (window.pollEvent(event))
+    {
+        if (event.type == sf::Event::Closed)
+            window.close();
+    }
+    window.clear();
+    window.draw(shape);
+    window.display();
+    }
+}