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Qwen3-30B-A3B-6bit

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MLX Community 5.52k

Thank you for making Qwen3 available to MLX community.

I was able to run Qwen3-30B-A3B-6bit on mlx_lm.server without problem. But when i tried to load it in LM Studio, I ran into some issues. I'm not sure why it just works in mlx_lm.server and with mlx server instance on LM Studio it complains about the Jinja2 prompt.

After reviewing the Jinja2 prompt with a Jinja2 parser, I found multiple parsing issues. I spent a few hours to debug it and fix the parsing, while trying to not modify the initial logic and intent. The change I had to do were significantly extensive, that I'm not 100% sure if I were able to preserve fully the initial logic and intent.

I would greatly appreciate if you could review this version that successfully parse and load in LM Studio and if you feel it pass your validation, I would invite to update it, so people can enjoy using it in LM Studio and other tools.

This version of the prompt parse succesfully and load successfully in LM Studio.

{%- if tools is defined and tools %}
    {{- '<|im_start|>system\n' }}
    {%- if messages is defined and messages|length > 0 and messages[0].role == 'system' %}
        {{- messages[0].content + '\n\n' }}
    {%- endif %}
    {{- "# Tools\n\nYou may call one or more functions to assist with the user query.\n\nYou are provided with function signatures within <tools></tools> XML tags:\n<tools>" }}
    {%- for tool in tools %}
        {{- "\n" }}
        {{- tool | tojson }}
    {%- endfor %}
    {{- "\n</tools>\n\nFor each function call, return a json object with function name and arguments within <tool_call></tool_call> XML tags:\n<tool_call>\n{\"name\": <function-name>, \"arguments\": <args-json-object>}\n</tool_call><|im_end|>\n" }}
{%- else %}
    {%- if messages is defined and messages|length > 0 and messages[0].role == 'system' %}
        {{- '<|im_start|>system\n' + messages[0].content + '<|im_end|>\n' }}
    {%- endif %}
{%- endif %}

{# Set up namespace for tracking multi-step tools #}
{%- set ns = namespace(multi_step_tool=true, last_query_index=0) %}
{%- if messages is defined %}
    {%- set ns.last_query_index = messages|length - 1 %}
    
    {# First pass - find the last non-tool-response user query #}
    {%- for i in range(messages|length - 1, -1, -1) %}
        {%- set message = messages[i] %}
        {%- if ns.multi_step_tool and message.role == "user" and not(message.content.startswith('<tool_response>') and message.content.endswith('</tool_response>')) %}
            {%- set ns.multi_step_tool = false %}
            {%- set ns.last_query_index = i %}
        {%- endif %}
    {%- endfor %}

    {# Main message processing loop #}
    {%- for i in range(messages|length) %}
        {%- set message = messages[i] %}
        {%- if (message.role == "user") or (message.role == "system" and i > 0) %}
            {{- '<|im_start|>' + message.role + '\n' + message.content + '<|im_end|>' + '\n' }}
        {%- elif message.role == "assistant" %}
            {%- set content = message.content %}
            {%- set reasoning_content = '' %}
            {%- if message.reasoning_content is defined and message.reasoning_content is not none %}
                {%- set reasoning_content = message.reasoning_content %}
            {%- else %}
                {%- if '</think>' in message.content %}
                    {%- set content_parts = message.content.split('</think>') %}
                    {%- if content_parts|length > 1 %}
                        {%- set content = content_parts[-1].lstrip('\n') %}
                        {%- set thinking_parts = content_parts[0].split('<think>') %}
                        {%- if thinking_parts|length > 1 %}
                            {%- set reasoning_content = thinking_parts[-1].lstrip('\n') %}
                        {%- endif %}
                    {%- endif %}
                {%- endif %}
            {%- endif %}
            {%- if i > ns.last_query_index %}
                {%- if loop.last or (not loop.last and reasoning_content) %}
                    {{- '<|im_start|>' + message.role + '\n<think>\n' + reasoning_content.strip('\n') + '\n</think>\n\n' + content.lstrip('\n') }}
                {%- else %}
                    {{- '<|im_start|>' + message.role + '\n' + content }}
                {%- endif %}
            {%- else %}
                {{- '<|im_start|>' + message.role + '\n' + content }}
            {%- endif %}
            {%- if message.tool_calls is defined and message.tool_calls %}
                {%- for tool_call in message.tool_calls %}
                    {%- if (loop.first and content) or (not loop.first) %}
                        {{- '\n' }}
                    {%- endif %}
                    {%- if tool_call.function is defined %}
                        {%- set function_call = tool_call.function %}
                    {%- else %}
                        {%- set function_call = tool_call %}
                    {%- endif %}
                    {{- '<tool_call>\n{\"name\": \"' }}
                    {{- function_call.name }}
                    {{- '\", \"arguments\": ' }}
                    {%- if function_call.arguments is string %}
                        {{- function_call.arguments }}
                    {%- else %}
                        {{- function_call.arguments | tojson }}
                    {%- endif %}
                    {{- '}\n</tool_call>' }}
                {%- endfor %}
            {%- endif %}
            {{- '<|im_end|>\n' }}
        {%- elif message.role == "tool" %}
            {%- if i == 0 or (messages[i-1].role != "tool") %}
                {{- '<|im_start|>user' }}
            {%- endif %}
            {{- '\n<tool_response>\n' }}
            {{- message.content }}
            {{- '\n</tool_response>' }}
            {%- if i == messages|length - 1 or (messages[i+1].role != "tool") %}
                {{- '<|im_end|>\n' }}
            {%- endif %}
        {%- endif %}
    {%- endfor %}
{%- endif %}

{%- if add_generation_prompt is defined and add_generation_prompt %}
    {{- '<|im_start|>assistant\n' }}
    {%- if enable_thinking is defined and enable_thinking is false %}
        {{- '<think>\n\n</think>\n\n' }}
    {%- endif %}
{%- endif %}