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J. Nick Koston
55323596a9
registry_download memoizes per process (failures uncached), so the prefetch and the install share one metadata round-trip per package. The idf ccache env always hands idf.py exactly one canonical spelling: the no-ccache path exports 0 so an unparsable inherited value or a probe-rejected shim cannot enable it, the enabled path exports 1 whatever accepted spelling arrived, and forced-on still runs the resolver for its no-binary warning. An empty env value keeps its historical disable meaning instead of falling to the default policy.
