Fix: skip import generation for packages in ignore_pkg_list

example/example_proto/test_ignore/ignored_pkg.proto

@@ -0,0 +1,12 @@
+syntax = "proto3";
+
+package test_ignore.ignored_pkg;
+
+message IgnoredMessage {
+    string text = 1;
+}
+
+enum IgnoredEnum {
+    IGNORED_ZERO = 0;
+    IGNORED_ONE = 1;
+}

example/example_proto/test_ignore/main_pkg.proto

@@ -0,0 +1,10 @@
+syntax = "proto3";
+
+package test_ignore.main_pkg;
+
+message MainMessage {
+    string normal_field = 1;
+    // These types should be used but NOT imported due to ignore_pkg_list
+    test_ignore.ignored_pkg.IgnoredMessage ignored_field = 2;
+    test_ignore.ignored_pkg.IgnoredEnum ignored_enum = 3;
+}

example/plugin_config.py

@@ -53,7 +53,7 @@ def exp_time() -> float:
 }
 comment_prefix = "p2p"
 template: Type[Template] = CustomCommentTemplate
-ignore_pkg_list: List[str] = ["validate", "p2p_validate"]
+ignore_pkg_list: List[str] = ["validate", "p2p_validate", "test_ignore.ignored_pkg"]
 pkg_config: Dict[str, SubConfigModel] = {
     "all_field_set_optional": SubConfigModel(module=all_field_set_option_config, use_root_config=True),
     "single_config": SubConfigModel(module=single_config_pkg_plugin_config),

protobuf_to_pydantic/plugin/field_desc_proto_to_code.py

@@ -99,6 +99,10 @@ def _add_other_module_pkg(self, other_fd: FileDescriptorProto, type_str: str) ->
         if other_fd.name == self._fd.name:
             return
 
+        # Skip import generation for ignored packages
+        if other_fd.package in self.config.ignore_pkg_list:
+            return
+
         fd_path_list: Tuple[str, ...] = Path(self._fd.name).parts
         message_path_list: Tuple[str, ...] = Path(other_fd.name).parts
         index: int = -1

tests/test_gen_code/test_demo_proto/test_plugin.py

@@ -1,3 +1,4 @@
+import os
 from inspect import getsource
 
 from google.protobuf import __version__
@@ -311,3 +312,38 @@ class Demo2(BaseModel):
 class Demo1(BaseModel):
     pass"""
         assert content.strip("\n") in getsource(diff_pkg_refer_2_p2p.Demo1).strip("\n")
+
+    def test_ignore_pkg_list_skips_imports(self) -> None:
+        """Test that packages in ignore_pkg_list do not generate relative imports."""
+        # Determine which proto version to test
+        if __version__ > "4.0.0":
+            proto_path = "proto_pydanticv2" if not is_v1 else "proto_pydanticv1"
+        else:
+            proto_path = "proto_3_20_pydanticv2" if not is_v1 else "proto_3_20_pydanticv1"
+
+        test_file_path = f"example/{proto_path}/example_proto/test_ignore/main_pkg_p2p.py"
+
+        # Check if the test file exists (should be generated by tox/generation script)
+        if not os.path.exists(test_file_path):
+            # Skip this test if files haven't been generated yet
+            # (This can happen when running tests directly without tox example generation)
+            import pytest
+            pytest.skip(f"Test file {test_file_path} not found - run tox example generation first")
+
+        # Read the generated file directly
+        with open(test_file_path, 'r') as f:
+            source = f.read()
+
+        # Test that NO import statements were generated for ignored package
+        assert "from .ignored_pkg_p2p import" not in source
+        assert "from ..test_ignore.ignored_pkg_p2p import" not in source
+        assert "import IgnoredMessage" not in source
+        assert "import IgnoredEnum" not in source
+
+        # Test that the class structure exists but types are undefined (demonstrating the ignore works)
+        assert "class MainMessage(BaseModel):" in source
+        assert "ignored_field: IgnoredMessage" in source  # Type used but not imported
+        assert "ignored_enum: IgnoredEnum" in source      # Type used but not imported
+
+        # Verify normal field works fine
+        assert "normal_field: str" in source