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69e482b0a8
When a model config declares no explicit `backend:`, Load() fell into a
trial loop built by ranging the external-backends Go map (random order)
with no filtering, returning the first backend whose gRPC LoadModel
succeeded. An unrelated installed backend - e.g. the "opus" audio codec -
could therefore win a GGUF/LLM model load, so a model that should run on
llama.cpp wrongly tried to use opus.
Extract the candidate selection into a pure, testable function
SelectAutoLoadBackends that:
- sorts the candidate list deterministically (no more map-order
nondeterminism), and
- for a `.gguf` model, filters to LLM-capable backends (via
core/config.BackendCapabilities) and puts llama-cpp first, so an
incompatible audio/codec/image backend can never win the trial loop.
If filtering would leave zero candidates, the full sorted set is returned
unchanged, so a previously-loadable model is never made unloadable.
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>
Assisted-by: claude:claude-opus-4-8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>