mdbook-epub unstable-2022-12-25 -> 0.4.37 https://github.com/michael-f-bryan/mdbook-epub/releases
attrpath: mdbook-epub
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There might already be an open PR for this update:
- mdbook-epub: unstable-2022-12-25 → 0.4.37
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/301959"