makefile, deletion and for flakes

flake.nix

@@ -0,0 +1,41 @@
+{
+  description = "C Project with Check, Valgrind, Gcov support";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+
+      buildInputs = with pkgs; [
+        check         # для unit-тестов
+        valgrind      # для проверки утечек
+        lcov          # для отчетов gcov
+        clang-tools   # clang-format
+        gcc           # компилятор
+        gnumake       # make
+        ncurses       # для TUI/CLI приложений
+        readline      # для readline поддержки
+        zlib          # сжатие данных
+        libxml2       # XML parsing
+        curl          # HTTP клиент
+        openssl       # криптография
+        sqlite        # база данных
+      ];
+    in {
+      devShells.default = pkgs.mkShell {
+        inherit buildInputs;
+
+        shellHook = ''
+          echo "✅ C Project Dev Environment Loaded"
+          echo "🔧 Available tools:"
+          echo "   - gcc, make, clang-format"
+          echo "   - checkmk, valgrind, lcov"
+          echo "🚀 Run 'make test' to build and run tests"
+        '';
+      };
+    });
+}