Was trying this out today and ran into the crash when installing the tool from nixpkgs, and even when building from source locally in a checkout. The crash was pretty easy to fix, but it might be better to use objc2-app-kit instead in the future. These now work on my system (macOS 26.7.2):
cargo run -- set --ext wav "mpv"cargo run -- info --ext txt
cargo run -- set --ext txt "Zed Preview" still fails but I think that is #1 (or https://github.com/philocalyst/infat/issues/42)
Also added a commit to clean up the drift between tag/published version and the Cargo manifests since the problem is called out in the nixpkgs source.
Closes #2