mirror of
https://github.com/jmorganca/ollama
synced 2025-10-05 16:22:53 +02:00
47991940d4
The format qwen3-coder uses is relatively unique, both in rendering and in parsing. To implement parsing, I wrote a custom parser in similar style to harmony. For the rendering, I found that the logic would be much more difficult to follow in a template, so I introduced the concept of a built-in renderer that uses go code, rather than a template to generate prompts. I set us up for future built-in parsers and renderers by making it so they can be specified in a Modelfile like so: ``` RENDERER "qwen3-coder" PARSER "qwen3-coder" ``` These need to be provided explicitly because the architecture alone is not enough to understand what format the model expects to receive, and what format we expect it to output (e.g., qwen3-coder is `qwen3moe`, which includes other qwen3-family models as well) I haven't converted harmony to be one of these "built-ins" yet, since some of it is in flux with the changes @ParthSareen has been making to move harmony to the runner. It is likely that many other built-ins will need to move to the runner as well, but I'm able to slightly defer that decision since qwen3-coder doesn't have thinking (and therefore doesn't need to be in the runner to make structured outputs work). I expect to unify harmony with this approach very soon. Whether a particular model supports tools or thinking was previously inferred from templates, but without a template we now also use the parser itself to declare what it supports. If we have future models that re-use the same parsing format, but have different capabilities, we'll want to parameterize them and give them different names to be specified as a `PARSER`. Misc changes: - I worked on the renderer by diffing outputs from the reference implementation and ours. To make it easier to do this, I extended <https://github.com/ollama/ollama/pull/11875> to also support returning the prompt via the openai compat layer