feat: add minimax-h3 support - #1854
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So fast as always |
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I was very confused because it was segfaulting for me when building diffusion model graph (specifically after calling |
danielhanchen
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Aug 8, 2026
ensure_sd_cpp_binary hands back whatever find_sd_cpp_binary locates and only probes that it runs, so an install upgraded from an older Studio kept serving its pre-H3 managed sd-cli. The H3 load's only gate is SdCppEngine.version(), which that binary passes, so the load reported ready and the failure surfaced on the first generation, after the whole bundle had downloaded. Gate the H3 path alone on the capability instead of a version string: upstream added --ref-video and the other H3-only options in the same commit that added MiniMax-H3 (leejet/stable-diffusion.cpp#1854, master-812-ea7f0c8), and the release prebuilts report 'version unknown, commit unknown' because they are built without a .git directory, so --help is the only usable signal. Image generation keeps accepting any user-supplied build. A stale copy under the installer-owned root is removed so the pinned prebuilt reinstalls; a build the user supplied is left in place and the load fails naming it, the same ownership split _usable_or_discard_managed makes. A --help that cannot be read means 'cannot tell', never 'no H3'.
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