Profile Default Fallback

Author: Behemyth

cppython/plugins/conan/builder.py

@@ -161,7 +161,7 @@ def package(self):
             'name': name,
             'version': version,
             'dependencies': [dependency.requires() for dependency in dependencies],
-            'preset_file': str(preset_file),
+            'preset_file': preset_file.as_posix(),  # Cross-platform path with forward slashes
         }
 
         result = template.substitute(values)

cppython/plugins/conan/plugin.py

@@ -43,6 +43,8 @@ def __init__(
         self._cli = Cli(self._conan_api)
         self._cli.add_commands()
 
+        self._ensure_default_profiles()
+
     @staticmethod
     def features(directory: Path) -> SupportedFeatures:
         """Queries conan support
@@ -114,6 +116,15 @@ def _prepare_installation(self) -> Path:
 
         return conanfile_path
 
+    def _ensure_default_profiles(self) -> None:
+        """Ensure default Conan profiles exist, creating them if necessary."""
+        try:
+            self._conan_api.profiles.get_default_host()
+            self._conan_api.profiles.get_default_build()
+        except Exception:
+            # If profiles don't exist, create them using profile detect
+            self._conan_api.command.run(['profile', 'detect'])
+
     def _run_conan_install(self, conanfile_path: Path, update: bool, logger) -> None:
         """Run conan install command using Conan API.