fix: keep deployments backend optional

services/core/models/pyproject.toml

@@ -23,7 +23,6 @@ dependencies = [
     "kubernetes>=31.0.0",
     "urllib3>=2.7.0",
     "nmp-common",
-    "nemo-deployments-plugin",
     "nemo-platform-plugin",
     "docker>=7.1.0",
     "tenacity>=8.5.0",  # Retry logic for Docker backend operations
@@ -62,6 +61,5 @@ dev = [
 
 [tool.uv.sources]
 nmp-common = { workspace = true }
-nemo-deployments-plugin = { workspace = true }
 nemo-platform-plugin = { workspace = true }
 models = { workspace = true }

tests/unit/test_docker_workspace_slices.py

@@ -0,0 +1,67 @@
+# SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+"""Regression tests for reduced uv workspaces used by Docker image builds."""
+
+import re
+import tomllib
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).parent.parent.parent
+WORKSPACE_SLICES = ("automodel", "rl", "unsloth")
+
+
+def _load_pyproject(path: Path) -> dict:
+    with open(path, "rb") as pyproject:
+        return tomllib.load(pyproject)
+
+
+def _normalize_package_name(name: str) -> str:
+    return re.sub(r"[-_.]+", "-", name).lower()
+
+
+def _workspace_sources(pyproject: dict) -> set[str]:
+    sources = pyproject.get("tool", {}).get("uv", {}).get("sources", {})
+    return {
+        _normalize_package_name(name)
+        for name, source in sources.items()
+        if isinstance(source, dict) and source.get("workspace") is True
+    }
+
+
+@pytest.mark.parametrize("slice_name", WORKSPACE_SLICES)
+def test_docker_workspace_slice_contains_all_workspace_sources(slice_name):
+    """Every workspace source must name a package copied into the image slice."""
+    workspace_path = ROOT / "docker" / slice_name / "pyproject.workspace.toml"
+    workspace = _load_pyproject(workspace_path)
+    member_paths = workspace["tool"]["uv"]["workspace"]["members"]
+    member_projects = [
+        (ROOT / member / "pyproject.toml", _load_pyproject(ROOT / member / "pyproject.toml")) for member in member_paths
+    ]
+    member_names = {_normalize_package_name(project["project"]["name"]) for _, project in member_projects}
+
+    for project_path, project in [(workspace_path, workspace), *member_projects]:
+        missing_sources = _workspace_sources(project) - member_names
+        assert not missing_sources, (
+            f"{slice_name} workspace is missing {sorted(missing_sources)} referenced by "
+            f"{project_path.relative_to(ROOT)}"
+        )
+
+
+def test_deployments_plugin_is_optional_for_models_service():
+    """The lazily loaded deployments backend must remain an optional package."""
+    models = _load_pyproject(ROOT / "services/core/models/pyproject.toml")
+    dependency_names = {
+        _normalize_package_name(re.match(r"[A-Za-z0-9_.-]+", dependency).group())
+        for dependency in models["project"]["dependencies"]
+    }
+
+    assert "nemo-deployments-plugin" not in dependency_names, (
+        "nmp-models loads the deployments backend lazily, so nemo-deployments-plugin "
+        "must not be an unconditional dependency"
+    )
+    assert "nemo-deployments-plugin" not in _workspace_sources(models), (
+        "an optional package must not be declared as a required workspace source"
+    )