install through cmake

day01cpp/CMakeLists.txt

-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.20)
 
 set(CMAKE_CXX_STANDARD 20)
 
@@ -7,3 +7,7 @@ project(day01 LANGUAGES CXX VERSION 1.0.0)
 add_executable(main
     ${PROJECT_SOURCE_DIR}/main.cpp
 )
+
+install(TARGETS main
+    DESTINATION bin
+)
\ No newline at end of file

day01cpp/flake.nix

@@ -22,12 +22,6 @@
           name = "main";
           inherit buildInputs;
           src = ./.;
-          installPhase = ''
-            runHook preInstall
-            mkdir -p $out/bin
-            cp ./main $out/bin/
-            runHook postInstall
-          '';
         };
         devShell = with pkgs; mkShell {
           buildInputs = buildInputs ++ [ clang-tools lldb ];