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fix modular pipeline class resolution for families outside the auto-pipeline mappings - #14736
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yiyixuxu merged 6 commits intoSep 14, 2026
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…ne mappings and fail clearly without blocks
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5 of 6 tasks
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hi @akshan-main however, agree that we should have better warn/error message for this case |
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done, added LTXPipeline and LTXImageToVideoPipeline to the text2video/image2video auto mappings and dropped the folder lookup. kept the error. |
yiyixuxu
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Sep 10, 2026
yiyixuxu
reviewed
Sep 10, 2026
yiyixuxu
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Sep 11, 2026
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What does this PR do?
ModularPipeline.from_pretrainedon a standard repo finds the modular class through the auto-pipeline mappings. LTX isn't in them, so it fell back to the baseModularPipeline, which has no default blocks, and__init__crashed on an unbound variable:Bare
ModularPipeline()crashed the same way. This addsLTXPipelineandLTXImageToVideoPipelineto the text2video and image2video auto mappings, so LTX-Video loads asLTXModularPipelinewithLTXAutoBlocks, and raises a clearValueErrorwhen no blocks class can be resolved (the old warning branch was unreachable, and the next line dereferencesself._blocksanyway).Found while verifying #14730 on real checkpoints.
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Who can review?
@yiyixuxu