.zip files built for macOS cannot be extracted with The Unarchiver: "no suitable image found" "file too short"

[scottnonnenberg-signal]

• Version:
  electron-builder v20.38.5
  electron-updater v4.0.6
  https://github.com/signalapp/Signal-Desktop/blob/development/package.json#L116

• Target:
  macOS

Some users are running into this error when they try to run the most recent version of Signal Desktop (v1.21.1 and v1.21.1-beta.1):

Library not loaded: @rpath/Electron Framework.framework/Electron Framework
Referenced from: /Applications/Signal Beta.app/Contents/MacOS/Signal Beta
Reason: no suitable image found. Did find:
/Applications/Signal Beta.app/Contents/MacOS/../Frameworks/Electron Framework.framework/Electron Framework: file too short
/Applications/Signal Beta.app/Contents/MacOS/../Frameworks/Electron Framework.framework/Electron Framework: stat() failed with errno=1

It appears that this only happens if the .zip file is extracted using The Unarchiver. If the built-in .zip extractor is used, things work properly. Looking at previous discussion on this it may have something to do with the use of symlinks/aliases within the set of files in the .app archive.

Signal Desktop issue: signalapp/Signal-Desktop#3128
Prior art: microsoft/BotFramework-Emulator#208

[stale]

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