Allow import argilla_server module with pydantic 2.0

src/argilla_server/__init__.py

@@ -12,4 +12,11 @@
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
-from argilla_server._app import app  # noqa
+import warnings
+
+from argilla_server.pydantic_v1 import PYDANTIC_MAJOR_VERSION
+
+if PYDANTIC_MAJOR_VERSION >= 2:
+    warnings.warn("The argilla_server package is not compatible with Pydantic 2. " "Please use Pydantic 1.x instead.")
+else:
+    from argilla_server._app import app  # noqa

src/argilla_server/pydantic_v1/__init__.py

@@ -11,8 +11,14 @@
 #  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #  See the License for the specific language governing permissions and
 #  limitations under the License.
+from importlib import metadata
 
 try:
     from pydantic.v1 import *  # noqa: F403
 except ImportError:
     from pydantic import *  # noqa: F403
+
+try:
+    PYDANTIC_MAJOR_VERSION: int = int(metadata.version("pydantic").split(".")[0])
+except metadata.PackageNotFoundError:
+    PYDANTIC_MAJOR_VERSION = 0