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fix(templates,validate): swap a template's missing model for its other-precision build - #966
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📝 WalkthroughWalkthroughTemplate fetching can check workflow model files against an offline object-info catalog and substitute a unique same-model precision variant. Validation now includes precision-sibling guidance, handles frontend-defined ChangesModel resolution and validation
Sequence Diagram(s)sequenceDiagram
participant fetch_cmd
participant _resolve_template_models
participant ObjectInfoCatalog
participant resolve_workflow_models
fetch_cmd->>_resolve_template_models: parsed workflow and catalog input
_resolve_template_models->>ObjectInfoCatalog: load object-info data
_resolve_template_models->>resolve_workflow_models: workflow and catalog data
resolve_workflow_models-->>_resolve_template_models: substitutions and unavailable models
_resolve_template_models-->>fetch_cmd: model-check notes
fetch_cmd->>fetch_cmd: serialize updated workflow when substitutions exist
Suggested reviewers: Priority: ⬇️ Low Merge Risk: 🟡 Moderate · up to Template fetch can replace a missing GGUF model with a different model whose name begins with another quantization tag. The fetched workflow would then load the wrong model. Fix this before merging. 🚥 Pre-merge checks | ✅ 2✅ Passed checks (2 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
✨ Simplify code
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Agent side: Comfy-Org/cloud#11664 exports the per-turn catalog to |
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Inline comments:
Review comments at @comfy_cli/model_variants.py:
- Around line 152-157: Update the promoted-widget rewrite in the renamed
workflow path to use PromotedInput.value_index and boundary_widget_targets() to
identify the host slot for each substitution, and replace only that slot on
instances of the affected subgraph. Keep properties.models updates tied to the
corresponding substitution; do not rewrite other widget entries that happen to
contain the same filename.
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CHANGELOG.mdcomfy_cli/command/templates.pycomfy_cli/cql/engine.pycomfy_cli/error_codes.pycomfy_cli/model_variants.pytests/comfy_cli/test_model_variants.py
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- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @comfy_cli/model_variants.py:
- Line 188: Update the swap resolution around `pi` and `swaps` to follow nested
promoted inputs to their bound host slot, applying the substitution there while
preserving the exact-value check. Add a two-level promotion regression test that
verifies the outer instance serializes with the replacement filename.
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…r-precision build templates fetch, with an offline catalog (--input or COMFY_OBJECT_INFO_FILE), replaces a model file the server lacks by the one installed file that is the same model in another precision or quantization, and reports it as a normalized_value warning (data.model_substitutions). A file with no unique such file is left alone and reported under data.unavailable_models with its closest options. Strict: only whole precision tokens are ignored (int8/fp8/fp16/bf16/fp32/convrot/scaled/...), the extension must match, and two candidates are no match. validate names that variant on an unknown_enum_value model finding, and stops failing two shapes the server accepts: a CustomCombo choice (frontend-defined options; its validate_inputs returns True) and a BOOLEAN saved as the string "True" (the server runs it through bool()). Prod: 495 cloud agent turns in two days failed validate on MiniMax H3's minimax_h3_video_vae_int8_convrot.safetensors while minimax_h3_video_vae_fp16.safetensors is installed. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…ed definition Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…idget Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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Reviewed the precision-sibling swap-in for missing models. Good instinct on the prod bench numbers. One real bug worth fixing before merge:
The precision-token regex is too permissive — it can match unrelated models, not just precision suffixes. _PRECISION_TOKEN includes generic substrings like "scaled" and "convrot" that can legitimately be part of a model's distinguishing name rather than a precision tag. Confirmed by direct execution: precision_sibling("realesrgan_x4_scaled.pth", ["realesrgan_x4.pth"]) returns "realesrgan_x4.pth", and precision_sibling("nvfp4_block.safetensors", ["block.safetensors"]) returns "block.safetensors" — both silently treat two potentially unrelated models as the same model in a different precision. If a template references a missing _scaled variant and the server happens to have an unrelated base-named model installed, templates fetch/validate silently substitutes the wrong file into the workflow with no warning, which is worse than the no model installed failure this PR is trying to avoid.
Two smaller items:
_FRONTEND_DEFINED_COMBOSis a one-entry hardcoded allowlist (CustomCombo.choice) becauseobject_infogives no structural signal distinguishing "frontend populates this combo dynamically" from "zero files installed." Any other node with the same pattern will hit the same false positive until manually added here — worth a one-line comment noting this is a known-narrow fix, if not addressed now._PRECISION_TOKENhas no GGUF quantization tags (q4_0,q4_k_m,q8_0, etc.) despite.ggufbeing an explicitly supported extension — a missing GGUF quant variant won't be recognized as a precision sibling of an installed one, missing the same class of fix for the GGUF ecosystem.
…the name; GGUF quant tags - "scaled", "convrot" and the fp8 formats only qualify a precision: they are dropped inside a run that also holds a precision tag (fp8_e4m3fn_scaled, int8_convrot), never alone, so realesrgan_x4_scaled is not realesrgan_x4. - A precision run that leads the name is the name (nvfp4_block is not block). - GGUF quantization tags (Q4_K_M, Q8_0, IQ4_XS, F16, ...) are precision tags on a .gguf file only. - _FRONTEND_DEFINED_COMBOS notes it is a known-narrow allowlist. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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@christian-byrne Thanks. Addressed in 0f528ec:
The full suite passes (8620). One test is excluded because it depends on the local certificate store. ruff is clean. Re-requesting your review. |
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- 🪄 Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @comfy_cli/model_variants.py:
- Line 56: Update the _GGUF_QUANT normalization in precision_key to preserve
leading quantization tags while continuing to normalize tags that appear later
in the stem, so Q4_K_M_block.gguf and Q8_0_block.gguf produce distinct keys. Add
a regression test verifying precision_sibling does not return Q8_0_block.gguf
for a missing Q4_K_M_block.gguf.
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A quant tag that leads the name stays in the key (it is the name), but it was collapsed to one shared marker, so Q4_K_M_block.gguf and Q8_0_block.gguf had the same key and one was offered as the other's precision sibling. The marker now carries the tag itself. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…y in its trailing precision precision_sibling matched too loosely: - It compared basenames, so a missing SDXL/lightning_fp16 swapped to SD15/lightning. The directory (separators normalized, case kept) is now part of the key; a bare name only matches a bare name. - It stripped precision words anywhere after the first token, so flux_fp8_e4m3fn_lora matched flux_lora. Only the stem's trailing run counts now, and it must start with a real precision tag, so a qualifier before it stays in the name (realesrgan_x4_scaled_fp16 is not realesrgan_x4). - It normalized separators and case, so flux1-dev matched flux1_dev as "another precision". The rest of the stem must now match verbatim, and the two precision tags must differ. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Re-reviewed after the fix, and verified directly by running the new matching logic against my original repro cases (not just reading the diff):
precision_sibling("realesrgan_x4_scaled.pth", ["realesrgan_x4.pth"]) -> None (was: wrongly matched)
precision_sibling("nvfp4_block.safetensors", ["block.safetensors"]) -> None (was: wrongly matched)
precision_sibling("minimax_h3_video_vae_int8_convrot.safetensors", ["minimax_h3_video_vae_fp16.safetensors"]) -> still correctly matches
The rewrite requires same directory, anchors tag-matching to the trailing separator-delimited word(s) instead of any substring, and requires a recognized "core" precision token (not just a "modifier" like "scaled") to actually establish a tag — a modifier with no core token in front of it no longer counts as a tag at all, which is what kills both false positives while keeping the real MiniMax H3 case working.
CI green. Approving.
# Conflicts: # CHANGELOG.md # comfy_cli/cql/engine.py
2 participants
Why
Six MiniMax H3 gallery templates name
minimax_h3_video_vae_int8_convrot.safetensors. A server that carriesminimax_h3_video_vae_fp16.safetensorsinstead failsvalidatewithunknown_enum_valueon every one of them, and the caller has to find and set the variant by hand.What changes
templates fetchchecks model files against an offline catalog. It runs only when there is one:--inputorCOMFY_OBJECT_INFO_FILE. A plain fetch stays a single network read.normalized_valuewarning underdata.model_substitutions.properties.models.url/hashare dropped there because they describe the replaced file.data.unavailable_modelswith its closest options, and the hint says those are different models.model_check_skipped. It never fails the fetch.comfy_cli/model_variants.py):Q4_K_Mon a.gguf) and may continue with qualifiers (e4m3fn/e5m2, scaled, convrot). A precision word inside the name (flux_fp8_e4m3fn_lora) or a qualifier before the tag (realesrgan_x4_scaled_fp16) stays part of the name.SDXL/lightning_fp16never becomesSD15/lightning, andflux1-devvsflux1_devis a different file, not another precision.qwen3vl_8b_int8_convrotwith bf16, fp8_scaled and nvfp4 installed stays unresolved.minimax_h3_audio_vae_fp32is not a variant of the video VAE.validate:unknown_enum_valuemodel finding names that variant first: "… is the same model in another precision: set it".CustomCombo.choicewithno_options_available. The options are frontend-defined andCustomComboNode.validate_inputsreturns True."True", asDrawViTPose.draw_headdefaults it.execution.pyrunsbool(val). The string"False"stays an error, and the message now says the server would read it as true.Callers opt in by exporting
COMFY_OBJECT_INFO_FILEtotemplates fetch. Older CLIs ignore the variable.Evidence
tests/comfy_cli/test_model_variants.py, including parametrized regressions for cross-folder, mid-name precision and separator-only matches (each fails on the earlier matcher).unavailable_modelsat fetchtests/comfy_clisuite passes apart from two failures that also fail onmainlocally (test_usage_error_envelope[unknown-option-on-a-nested-command],test_http.py::test_an_unloadable_supplement_falls_through_to_the_platform_roots, local cert store).Overlaps: none with #960/#965. The validate hunk sits outside the blocks they edit.
Please squash-merge with a clean message.
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