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refactor(deps): demote LangChain and LangChain-providers from core to dev #1806

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Pouyanpi merged 3 commits into from
Apr 30, 2026
Merged

refactor(deps): demote LangChain and LangChain-providers from core to dev #1806

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81eb2c6
refactor(deps): demote LangChain and LangChain-providers from core to…
Pouyanpi Apr 20, 2026
a807975
address review suggestions by @tgassernv
Pouyanpi Apr 30, 2026
0a3b096
docs: drop langchain-nvidia install hint and remove stale extras from…
Pouyanpi Apr 30, 2026
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8 changes: 3 additions & 5 deletions docs/getting-started/installation-guide.md
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Expand Up @@ -62,10 +62,10 @@ Use the following steps to install the NeMo Guardrails library in a virtual envi

::::

1. Install the NeMo Guardrails library with support for NVIDIA-hosted models. Set `NVIDIA_API_KEY` to your personal API key generated on [build.nvidia.com](https://build.nvidia.com/).
1. Install the NeMo Guardrails library. Set `NVIDIA_API_KEY` to your personal API key generated on [build.nvidia.com](https://build.nvidia.com/).

```bash
pip install "nemoguardrails[nvidia]"
pip install nemoguardrails
```

1. Set up an environment variable for your NVIDIA API key.
Expand Down Expand Up @@ -101,7 +101,7 @@ git clone https://github.com/NVIDIA-NeMo/Guardrails.git nemoguardrails
cd nemoguardrails
python -m venv .venv
source .venv/bin/activate
poetry install --extras "nvidia"
poetry install
```

When using Poetry, prefix CLI commands with `poetry run`:
Expand All @@ -120,8 +120,6 @@ You can install the NeMo Guardrails library with optional extra packages to add

| Extra | Description |
|-------|-------------|
| `nvidia` | NVIDIA-hosted model integration through [build.nvidia.com](https://build.nvidia.com/) |
| `openai` | OpenAI-hosted model integration |
| `server` | [Guardrails API server](../run-rails/using-fastapi-server/overview.md) dependencies (aiofiles for async file handling, openai for API schemas). FastAPI is a core dependency. Required to run `nemoguardrails server`. |
| `sdd` | [Sensitive data detection](../configure-rails/guardrail-catalog/pii-detection.md#presidio-based-sensitive-data-detection) using Presidio |
| `eval` | [Evaluation tools](../evaluation/evaluate-guardrails.md) for testing guardrails |
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8 changes: 4 additions & 4 deletions nemoguardrails/imports.py
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Expand Up @@ -145,11 +145,11 @@ def import_optional_dependency(

# Commonly used optional dependencies with their extra groups
OPTIONAL_DEPENDENCIES = {
"openai": "openai",
"langchain": None, # Not in extras
"langchain_openai": "openai",
"openai": "server",
"langchain": None,
"langchain_openai": None,
"langchain_community": None,
"langchain_nvidia_ai_endpoints": "nvidia",
"langchain_nvidia_ai_endpoints": None,
"torch": None,
"transformers": None,
"presidio_analyzer": None,
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