fix(launcher): lazy-import nemo_evaluator in loading.py to fix docs env

The top-level `from nemo_evaluator.core.input import ...` in loading.py
triggered the full nemo_evaluator import chain (including pydantic) at
module import time. In docs environments where nemo_evaluator source is
on PYTHONPATH but pydantic is not installed, this caused a
ModuleNotFoundError for pydantic that was silently swallowed by the
try/except in __init__.py, making extract_framework_yml and
parse_framework_to_irs unavailable.

Move the import to the only call site (parse_framework_to_irs) so
loading.py can be imported without the full nemo_evaluator dep tree.

Signed-off-by: Wojciech Prazuch <wprazuch@nvidia.com>

Author: wprazuch

packages/nemo-evaluator-launcher/src/nemo_evaluator_launcher/common/container_metadata/loading.py

@@ -25,7 +25,6 @@
 from typing import Optional
 
 import yaml
-from nemo_evaluator.core.input import get_framework_evaluations
 
 from nemo_evaluator_launcher.common.container_metadata.intermediate_repr import (
     HarnessIntermediateRepresentation,
@@ -943,6 +942,8 @@ def parse_framework_to_irs(
             temp_file_path = temp_file.name
 
         try:
+            from nemo_evaluator.core.input import get_framework_evaluations
+
             include_internal = (
                 importlib.util.find_spec("nemo_evaluator_internal") is not None
                 or importlib.util.find_spec("nemo_evaluator_launcher_internal")

packages/nemo-evaluator-launcher/tests/unit_tests/test_loading.py

@@ -208,9 +208,7 @@ def test_create_task_irs(self, mock_extract):
 class TestParseFrameworkToIrs:
     """Test parsing framework.yml to IRs."""
 
-    @patch(
-        "nemo_evaluator_launcher.common.container_metadata.loading.get_framework_evaluations"
-    )
+    @patch("nemo_evaluator.core.input.get_framework_evaluations")
     def test_parse_framework_to_irs_success(self, mock_get_evaluations):
         """Test successful parsing of framework.yml."""
         framework_content = """
@@ -237,9 +235,7 @@ def test_parse_framework_to_irs_success(self, mock_get_evaluations):
         assert harness_ir.name == "test-harness"  # Original name preserved
         assert len(task_irs) > 0
 
-    @patch(
-        "nemo_evaluator_launcher.common.container_metadata.loading.get_framework_evaluations"
-    )
+    @patch("nemo_evaluator.core.input.get_framework_evaluations")
     def test_parse_framework_to_irs_preserves_case(self, mock_get_evaluations):
         """Test that framework name case is preserved."""
         framework_content = """
@@ -274,9 +270,7 @@ def test_parse_framework_to_irs_preserves_name(self):
 """
         # This should not raise an error - no validation in loading.py
         # We'll mock get_framework_evaluations to avoid actual parsing
-        with patch(
-            "nemo_evaluator_launcher.common.container_metadata.loading.get_framework_evaluations"
-        ) as mock_get:
+        with patch("nemo_evaluator.core.input.get_framework_evaluations") as mock_get:
             mock_get.return_value = ("test-harness-123", {}, {})
             harness_ir, task_irs = parse_framework_to_irs(
                 framework_content, "test:latest", None