Build dmg and MAS with different CFBundleIdentifier

[GabrielNSD]

• Electron-Builder Version: 23.6.0

• Node Version: 14.21.3

• Electron Version: 20.3.0
• Electron Type (current, beta, nightly):

• Target: dmg, zip and mas

Hi there! I have an app that is currently just distributed by .dmg files. I use the electron-update to provide updates for the users.
Now we want to publish the app in the App Store, for doing so the CFBundleIdentifer must match with the one already registered in the App Store. The problem is that we have been releasing the app with a different appId.
Just changing the appId to the new one will break the update for the installed .dmg.
My idea is to keep keep building the dmg using the old id and build the MAS using the "new" id.
I have tried doing that by change my build configuration, either by using extendInfo in the mas key and add the key CFBundleIdentifier with the new id, what makes the .pkg file being able to upload by transporter, but making dmg impossible to update since it also changes the Info.plist of the .zip. Or tried to put the CFBundleIdentifier key directly in the entitlements.mas.plist file, which had no effect :/.
Here is part of my json file with build configuration:

{...
    "mac": {
      "icon": "src/assets/icons/icon.icns",
      "appId": "com.old-id.app",
      "category": "public.app-category.education",
      "target": [
        "dmg",
        "zip",
        "mas"
      ],
      "files": [
        "entitlements.mac.plist",
        "entitlements.mas.plist"
      ],
      "hardenedRuntime": true,
      "entitlements": "entitlements.mac.plist",
      "extendInfo": {
        "NSMicrophoneUsageDescription": "Please give us access to your microphone"
      }
    },
    "mas": {
      "entitlements": "entitlements.mas.plist"
    },
...}

Is there a way to achieve this? Keep the old CFBundleIdentifier in the .zip file and use the new id only for the MAS (.pkg)?

[mmaietta]

I think you can set bundleVersion uniquely on mac and mas targets, and that should override the CFBundleVersion to be different per platform. I'm just running off of memory here though, don't have the code handy to check the behavior.

[GabrielNSD]

Hi @mmaietta , thank you for the answer. As far as I understood, the CFBundleIdentifier is the key used by electron-updater to locate the bundle that is eligible to update. The bundleVersion overrides the CFBundleVersion, which I am not having trouble

[mmaietta]

Whoops, my bad, I misread.

In that case, I think you should be able to specify appId in mas target to customize that.

[GabrielNSD]

Unfortunately, specifying appId in mas target does not change the CFBundleIdentifier of the packaged MAS, it still uses the appId from the mac key.

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[github-actions]

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