duckduckgo-search is renamed to ddgs

Currently, I am seeing warnings like:
```
/Users/bas.nijholt/agent-cli/.venv/lib/python3.11/site-packages/pydantic_ai/common_tools/duckduckgo.py:68:
RuntimeWarning: This package (`duckduckgo_search`) has been renamed to `ddgs`! Use `pip install ddgs` instead.
  DuckDuckGoSearchTool(client=duckduckgo_client or DDGS(), max_results=max_results).__call__,
```

Author: basnijholt

docs/install.md

@@ -54,7 +54,7 @@ pip/uv-add "pydantic-ai-slim[openai]"
 * `groq` — installs `groq` [PyPI ↗](https://pypi.org/project/groq){:target="_blank"}
 * `mistral` — installs `mistralai` [PyPI ↗](https://pypi.org/project/mistralai){:target="_blank"}
 * `cohere` - installs `cohere` [PyPI ↗](https://pypi.org/project/cohere){:target="_blank"}
-* `duckduckgo` - installs `duckduckgo-search` [PyPI ↗](https://pypi.org/project/duckduckgo-search){:target="_blank"}
+* `duckduckgo` - installs `ddgs` [PyPI ↗](https://pypi.org/project/ddgs){:target="_blank"}
 * `tavily` - installs `tavily-python` [PyPI ↗](https://pypi.org/project/tavily-python){:target="_blank"}
 
 See the [models](models/index.md) documentation for information on which optional dependencies are required for each model.

docs/tools.md

@@ -732,7 +732,7 @@ If you'd like to use a tool from LangChain's [community tool library](https://py
 
 You will need to install the `langchain-community` package and any others required by the tool in question.
 
-Here is how you can use the LangChain `DuckDuckGoSearchRun` tool, which requires the `duckduckgo-search` package:
+Here is how you can use the LangChain `DuckDuckGoSearchRun` tool, which requires the `ddgs` package:
 
 ```python {test="skip"}
 from langchain_community.tools import DuckDuckGoSearchRun

pydantic_ai_slim/pydantic_ai/common_tools/duckduckgo.py

@@ -9,10 +9,13 @@
 from pydantic_ai.tools import Tool
 
 try:
-    from duckduckgo_search import DDGS
+    try:
+        from ddgs import DDGS
+    except ImportError:  # Fallback for older versions of ddgs
+        from duckduckgo_search import DDGS
 except ImportError as _import_error:
     raise ImportError(
-        'Please install `duckduckgo-search` to use the DuckDuckGo search tool, '
+        'Please install `ddgs` to use the DuckDuckGo search tool, '
         'you can use the `duckduckgo` optional group — `pip install "pydantic-ai-slim[duckduckgo]"`'
     ) from _import_error
 

pydantic_ai_slim/pyproject.toml

@@ -70,7 +70,7 @@ groq = ["groq>=0.19.0"]
 mistral = ["mistralai>=1.2.5"]
 bedrock = ["boto3>=1.37.24"]
 # Tools
-duckduckgo = ["duckduckgo-search>=7.0.0"]
+duckduckgo = ["ddgs>=9.0.0"]
 tavily = ["tavily-python>=0.5.0"]
 # CLI
 cli = ["rich>=13", "prompt-toolkit>=3", "argcomplete>=3.5.0"]