(sigil store db)

Initialize the store database schema.

Creates the items, refs, and roots tables if they don't exist.

Add an item record to the database.

Get an item record by store path.

Returns an alist with item fields, or #f if not found.

Get an item record by its full content hash. Output hashes are not unique in principle (two derivations may produce identical bytes), so callers receive every matching row in stable path order and can apply their own provenance policy.

Get the item produced by an exact full derivation hash. Seal derivation hashes identify one output item for the current single-output store schema.

Check if an item exists in the database.

List all item store paths.

Delete an item record from the database.

Also removes any reference edges involving this item.

Add a reference edge: referrer depends on reference.

Get the store paths that an item references (its dependencies).

Get the store paths that reference a given item (its reverse deps).

Register a GC root pointing to a store path.

Remove a GC root by name.

List all GC roots as alists with name and item_path.

Get all unique item paths referenced by roots.

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