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The hh_fanout binary was removed in D53956499, preventing OSS users from generating dependency graph files needed for loading saved states.

Fortunately, the backing logic still exists in the repo and we can trivially create a Rust executable to expose it again. Do so, replacing some panics in the backing code with Err returns for consistency.

@meta-cla meta-cla bot added the CLA Signed label Nov 18, 2025
The `hh_fanout` binary was removed in D53956499, preventing OSS users from generating
dependency graph files needed for loading saved states.

Fortunately, the backing logic still exists in the repo and we can trivially create
a Rust executable to expose it again. Do so, replacing some `panic`s in the backing code
with `Err` returns for consistency.
@mszabo-wikia mszabo-wikia force-pushed the create-hh-fanout-replacement branch from 5ec50cd to a00d0a0 Compare November 18, 2025 18:15
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@mszabo-wikia has updated the pull request. You must reimport the pull request before landing.

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