{% macro render_extra_keys(json_dict, handled_keys) %} {%- if json_dict is mapping %} {%- for json_key in json_dict if json_key not in handled_keys %} {%- if json_dict[json_key] is mapping or (json_dict[json_key] is sequence and json_dict[json_key] is not string) %} {{- '\n<' ~ json_key ~ '>' ~ (json_dict[json_key] | tojson | safe) ~ '' }} {%- else %} {{-'\n<' ~ json_key ~ '>' ~ (json_dict[json_key] | string) ~ '' }} {%- endif %} {%- endfor %} {%- endif %} {% endmacro %} {%- set enable_thinking = enable_thinking if enable_thinking is defined else True %} {%- set truncate_history_thinking = truncate_history_thinking if truncate_history_thinking is defined else True %} {%- set ns = namespace(last_user_idx = -1) %} {%- set loop_messages = messages %} {%- for m in loop_messages %} {%- if m["role"] == "user" %} {%- set ns.last_user_idx = loop.index0 %} {%- endif %} {%- endfor %} {%- if messages[0]["role"] == "system" %} {%- set system_message = messages[0]["content"] %} {%- set loop_messages = messages[1:] %} {%- else %} {%- set system_message = "" %} {%- set loop_messages = messages %} {%- endif %} {%- if not tools is defined %} {%- set tools = [] %} {%- endif %} {# Recompute last_user_idx relative to loop_messages after handling system #} {%- set ns = namespace(last_user_idx = -1) %} {%- for m in loop_messages %} {%- if m["role"] == "user" %} {%- set ns.last_user_idx = loop.index0 %} {%- endif %} {%- endfor %} {%- if system_message is defined %} {{- "<|im_start|>system\n" + system_message }} {%- else %} {%- if tools is iterable and tools | length > 0 %} {{- "<|im_start|>system\n" }} {%- endif %} {%- endif %} {%- if tools is iterable and tools | length > 0 %} {%- if system_message is defined and system_message | length > 0 %} {{- "\n\n" }} {%- endif %} {{- "# Tools\n\nYou have access to the following functions:\n\n" }} {{- "" }} {%- for tool in tools %} {%- if tool.function is defined %} {%- set tool = tool.function %} {%- endif %} {{- "\n\n" ~ tool.name ~ "" }} {%- if tool.description is defined %} {{- '\n' ~ (tool.description | trim) ~ '' }} {%- endif %} {{- '\n' }} {%- if tool.parameters is defined and tool.parameters is mapping and tool.parameters.properties is defined and tool.parameters.properties is mapping %} {%- for param_name, param_fields in tool.parameters.properties|items %} {{- '\n' }} {{- '\n' ~ param_name ~ '' }} {%- if param_fields.type is defined %} {{- '\n' ~ (param_fields.type | string) ~ '' }} {%- endif %} {%- if param_fields.description is defined %} {{- '\n' ~ (param_fields.description | trim) ~ '' }} {%- endif %} {%- if param_fields.enum is defined %} {{- '\n' ~ (param_fields.enum | tojson | safe) ~ '' }} {%- endif %} {%- set handled_keys = ['name', 'type', 'description', 'enum'] %} {{- render_extra_keys(param_fields, handled_keys) }} {{- '\n' }} {%- endfor %} {%- endif %} {% set handled_keys = ['type', 'properties', 'required'] %} {{- render_extra_keys(tool.parameters, handled_keys) }} {%- if tool.parameters is defined and tool.parameters.required is defined %} {{- '\n' ~ (tool.parameters.required | tojson | safe) ~ '' }} {%- endif %} {{- '\n' }} {%- set handled_keys = ['type', 'name', 'description', 'parameters'] %} {{- render_extra_keys(tool, handled_keys) }} {{- '\n' }} {%- endfor %} {{- "\n" }} {{- '\n\nIf you choose to call a function ONLY reply in the following format with NO suffix:\n\n\n\n\nvalue_1\n\n\nThis is the value for the second parameter\nthat can span\nmultiple lines\n\n\n\n\n\nReminder:\n- Function calls MUST follow the specified format: an inner block must be nested within XML tags\n- Required parameters MUST be specified\n- You may provide optional reasoning for your function call in natural language BEFORE the function call, but NOT after\n- If there is no function call available, answer the question like normal with your current knowledge and do not tell the user about function calls\n' }} {%- endif %} {%- if system_message is defined %} {{- '<|im_end|>\n' }} {%- else %} {%- if tools is iterable and tools | length > 0 %} {{- '<|im_end|>\n' }} {%- endif %} {%- endif %} {%- for message in loop_messages %} {%- if message.role == "assistant" %} {# Add reasoning content in to content field for unified processing below. #} {%- if message.reasoning_content is defined and message.reasoning_content is string and message.reasoning_content | trim | length > 0 %} {%- set content = "\n" ~ message.reasoning_content ~ "\n\n" ~ (message.content | default('', true)) %} {%- else %} {%- set content = message.content | default('', true) %} {%- if content is string -%} {# Allow downstream logic to to take care of broken thought, only handle coherent reasoning here. #} {%- if '' not in content and '' not in content -%} {%- set content = "" ~ content -%} {%- endif -%} {%- else -%} {%- set content = content -%} {%- endif -%} {%- endif %} {%- if message.tool_calls is defined and message.tool_calls is iterable and message.tool_calls | length > 0 %} {# Assistant message has tool calls. #} {{- '<|im_start|>assistant\n' }} {%- set include_content = not (truncate_history_thinking and loop.index0 < ns.last_user_idx) %} {%- if content is string and content | trim | length > 0 %} {%- if include_content %} {{- (content | trim) ~ '\n' -}} {%- else %} {%- set c = (content | string) %} {%- if '' in c %} {# Keep only content after the last closing think. Also generation prompt causes this. #} {%- set c = c.split('')[-1] %} {%- elif '' in c %} {# If was opened but never closed, drop the trailing think segment #} {%- set c = c.split('')[0] %} {%- endif %} {%- set c = "" ~ c | trim %} {%- if c | length > 0 %} {{- c ~ '\n' -}} {%- endif %} {%- endif %} {%- else %} {{- "" -}} {%- endif %} {%- for tool_call in message.tool_calls %} {%- if tool_call.function is defined %} {%- set tool_call = tool_call.function %} {%- endif %} {{- '\n\n' -}} {%- if tool_call.arguments is defined %} {%- for args_name, args_value in tool_call.arguments|items %} {{- '\n' -}} {%- set args_value = args_value | tojson | safe if args_value is mapping or (args_value is sequence and args_value is not string) else args_value | string %} {{- args_value ~ '\n\n' -}} {%- endfor %} {%- endif %} {{- '\n\n' -}} {%- endfor %} {{- '<|im_end|>\n' }} {%- else %} {# Assistant message doesn't have tool calls. #} {%- if not (truncate_history_thinking and loop.index0 < ns.last_user_idx) %} {{- '<|im_start|>assistant\n' ~ (content | default('', true) | string | trim) ~ '<|im_end|>\n' }} {%- else %} {%- set c = (content | default('', true) | string) %} {%- if '' in c and '' in c %} {%- set c = "" ~ c.split('')[-1] %} {%- endif %} {%- set c = c | trim %} {%- if c | length > 0 %} {{- '<|im_start|>assistant\n' ~ c ~ '<|im_end|>\n' }} {%- else %} {{- '<|im_start|>assistant\n<|im_end|>\n' }} {%- endif %} {%- endif %} {%- endif %} {%- elif message.role == "user" or message.role == "system" %} {{- '<|im_start|>' + message.role + '\n' }} {%- set content = message.content | string %} {{- content }} {{- '<|im_end|>\n' }} {%- elif message.role == "tool" %} {%- if loop.previtem and loop.previtem.role != "tool" %} {{- '<|im_start|>user\n' }} {%- endif %} {{- '\n' }} {{- message.content }} {{- '\n\n' }} {%- if not loop.last and loop.nextitem.role != "tool" %} {{- '<|im_end|>\n' }} {%- elif loop.last %} {{- '<|im_end|>\n' }} {%- endif %} {%- else %} {{- '<|im_start|>' + message.role + '\n' + message.content + '<|im_end|>\n' }} {%- endif %} {%- endfor %} {%- if add_generation_prompt %} {%- if enable_thinking %} {{- '<|im_start|>assistant\n\n' }} {%- else %} {{- '<|im_start|>assistant\n' }} {%- endif %} {%- endif %}

nvidia/nemotron-3-nano