Anima-2.9B is a depth-expanded finetune of Anima 1.0 Base carrying 40
transformer blocks against the base repo's 28. The reference entry points at
the Diffusers conversion. Single-file releases load through the native loader:
TransformerSpec gains an infer_config hook, the Anima spec uses it to size
num_layers to the block indices in the file, and model_anima routes a
checkpoint-selected safetensors through the loader with the remaining
components from the base repo.
217-line bespoke loader collapses to a 40-line ANIMA_SPEC in
pipelines/anima/__init__.py (Cosmos converter + llm_adapter sibling +
Cosmos 1.0 forbidden marker).
Drop the class-keyed REGISTRY: Anima and raw Cosmos share
CosmosTransformer3DModel but need different specs. Specs pass via
explicit native_spec= kwarg; make_default_spec(cls) covers the
auto-converter case.
Anima community files bundle the llm_adapter inline alongside the
transformer, so CosmosTransformer3DModel.from_single_file mangles the
118 adapter keys via Cosmos 2.0 substring renames. New helper reads the
safetensors, strips the BFL-style prefix variants, partitions adapter
keys out, runs the rest through diffusers' converter, and loads each
half into its target. SDNQ and layerwise quantization honored; TRT and
GGUF skipped.
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