FYI: walkthrough for using Ollama

[namin]

Hi,

I just wanted to share an end-to-end example of using Ollama.

The relevant langchain doc is here: https://python.langchain.com/api_reference/ollama/chat_models/langchain_ollama.chat_models.ChatOllama.html#langchain_ollama.chat_models.ChatOllama

Python file ex.py

from langchain_ollama import ChatOllama

model_name = 'qwen2.5'

model = ChatOllama(model=model_name)

import controlflow as cf

agent = cf.Agent(model=model)

result = agent.run("Your goal is to find the answer to the meaning of life.")
print(result)

Shell commands

pip install langchain-ollama
ollama pull qwen2.5
python ex.py

The result is:

% python ex.py
╭─ Agent: Norby ────────────────────────────────────────────────────────────────────────────╮
│                                                                                           │
│  ✅ Tool call: "mark_task_9e813d9d_successful"                                            │
│                                                                                           │
│     Tool args: {'task_result': "The meaning of life is a philosophical question, and      │
│     there isn't one definitive answer. However, many people believe it to be 42 in the    │
│     context of Douglas Adams' science fiction series 'The Hitchhiker's Guide to the       │
│     Galaxy.' In reality, the meaning can vary greatly depending on individual             │
│     perspectives."}                                                                       │
│                                                                                           │
│     Tool result: Task #9e813d9d ("Your goal is to find the answer to the meaning of       │
│     ...") marked successful.                                                              │
│                                                                                           │
╰─────────────────────────────────────────────────────────────────────────────  6:18:31 PM ─╯
The meaning of life is a philosophical question, and there isn't one definitive answer. However, many people believe it to be 42 in the context of Douglas Adams' science fiction series 'The Hitchhiker's Guide to the Galaxy.' In reality, the meaning can vary greatly depending on individual perspectives.

[namin]

To also support Ollama in automatic configurations, here is a PR:
#389