Add compile_commands.json support

flake.nix

@@ -3,9 +3,13 @@
 
   inputs = {
     nixpkgs.url = "nixpkgs/nixos-unstable";
+    mini-compile-commands = { 
+      url = "github:danielbarter/mini_compile_commands";
+      flake = false;
+    };
   };
 
-  outputs = { self, nixpkgs }:
+  outputs = { self, nixpkgs, mini-compile-commands }:
   let
     system = "x86_64-linux";
     pkgs = nixpkgs.legacyPackages.${system};
@@ -14,13 +18,19 @@
       gnumake
       gcc
       gdb
-      # clang_16
-      # clang-tools_16
-      # lld_16
-      # llvmPackages_16.libllvm
+      clang_16
+      clang-tools_16
+      lld_16
+      llvmPackages_16.libllvm
+
+      cmake
+      gtest
     ];
   in {
-    devShells.${system}.default = pkgs.mkShell {
+    devShells.${system}.default = 
+    with import nixpkgs { system = "${system}"; };
+    let mcc-env = (callPackage mini-compile-commands {}).wrap stdenv;
+    in (pkgs.mkShell.override {stdenv = mcc-env;}) {
       buildInputs = libs;
       LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath libs;
     };