LogChangeFileDiffAction {
        hash: pijul::Hash,
        file: String,
        action: diff::Action,
    },

        Message::LogChangeFileDiffAction { hash, file, action } => {
            if let Some(cursor::Selection::LogChange {
                ix: _,
                hash: selected_hash,
                message: _,
                diffs: Some(diffs),
                file:
                    Some(cursor::LogChangeFileSelection {
                        ix: _,
                        path: selected_path,
                    }),
            }) = state.cursor.selection.as_mut()
            {
                if *selected_hash == hash && *selected_path == file {
                    let (_file, state) = diffs.get_mut(&file).unwrap();
                    diff::update(state, action);
                }
            }
            Task::none()
        }

                        diff::view(Some(state), file).map(|action| todo!())

                        diff::view(Some(state), file).map(|action| {
                            Message::LogChangeFileDiffAction {
                                hash: *hash,
                                file: path.clone(),
                                action,
                            }
                        })