Added supported_features in kernel_info_reply (#690)

* Added supported_features to kernel_info_reply

* Upgraded OSX images in the CI

Author: JohanMabille

.github/workflows/main.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-22.04, ubuntu-24.04, macos-13, macos-14]
+        os: [ubuntu-22.04, ubuntu-24.04, macos-14, macos-15]
         build_type: [static_build, shared_build]
 
     steps:

src/xinterpreter.cpp

@@ -300,8 +300,9 @@ namespace xpyt
             {"url", "https://xeus-python.readthedocs.io"}
         });
 
-        return xeus::create_info_reply(
-            "5.3",              // protocol_version
+        bool has_debugger = (PY_MAJOR_VERSION != 3) || (PY_MAJOR_VERSION != 13);
+        nl::json rep = xeus::create_info_reply(
+            "5.5",              // protocol_version - overwrited in xeus core
             "xeus-python",      // implementation
             XPYT_VERSION,       // implementation_version
             "python",           // language_name
@@ -312,9 +313,16 @@ namespace xpyt
             R"({"name": "ipython", "version": )" + std::to_string(PY_MAJOR_VERSION) + "}",    // language_codemirror_mode
             "python",           // language_nbconvert_exporter
             banner,             // banner
-            (PY_MAJOR_VERSION != 3) || (PY_MINOR_VERSION != 13), // debugger
+            has_debugger, // debugger
             help_links          // help_links
         );
+
+        if (has_debugger)
+        {
+            rep["supported_features"] = nl::json::array({"debugger"});
+        }
+
+        return rep;
     }
 
     void interpreter::shutdown_request_impl()