Create DMG or PKG for Mac

[devnoname120]

It will make it easier to install than asking the user to manually copy the bundle at the right place.

See:

• https://matthew-brett.github.io/docosx/flat_packages.html
• https://stackoverflow.com/a/11487658
• https://developer.apple.com/library/archive/documentation/DeveloperTools/Reference/DistributionDefinitionRef/Chapters/Distribution_XML_Ref.html#//apple_ref/doc/uid/TP40005370-CH100-SW35

With a DMG it's not possible to add a shortcut to the user's /Library because the path is unknown. Both symbolic links and aliases on macOS require the path to be fully resolved, so we can't use e.g. ~.

Examples of PKG:

• https://github.com/hensm/fx_cast/blob/fcce716d8f7851b2df6ac640a3ac8d79d6455573/app/packaging/mac/distribution.xml
• https://github.com/KosalaHerath/macos-installer-builder/blob/c932ab09d8e7d7722ffe309c60816c985084e13f/macOS-x64/darwin/Distribution
• https://github.com/DISTRHO/PawPaw/pull/2/files
• https://github.com/open-eid/osx-installer/blob/master/distribution.xml

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Random notes (tested on macOS Monterey 12.1) for a postinstall script:

• open "x-apple.systempreferences:com.apple.preference.keyboard?InputSources" only open the main settings screen.
• open -b com.apple.systempreferences /System/Library/PreferencePanes/Keyboard.prefPane opens the keyboard settings properly, but doesn't open the Input Sources tab.
• osascript -e 'tell application "System Preferences" to reveal anchor "InputSources" of pane id "com.apple.preference.keyboard"' -e 'tell application "System Preferences" to activate' which I cobbled up seems to work.
• Not sure if there is a reliable way to set the keyboard layout from a shell.

[devnoname120]

Started work here: https://github.com/qwerty-fr/qwerty-fr/tree/macOS-pkg

TODO:

• [ ] Add welcome screen with a link to https://qwerty-fr.org and GitHub.
• [x] Add osascript -e 'tell application "System Preferences" to reveal anchor "InputSources" of pane id "com.apple.preference.keyboard"' -e 'tell application "System Preferences" to activate' as a postscript.
• [ ] Use AppleScript to automate the GUI and enable the layout automatically.
• [x] Add reboot requirement to the package.
• [ ] Sign/notarize the PKG file to avoid Gatekeeper issues. Without notarization users have to do a right click then click on open to be able to run the PKG. That's awkward and confusing. Quill looks like a good alternative to the official macOS codesign.

[devnoname120]

Postponed:

• Adding a welcome screen.
• Signing the PKG file (it requires an expensive $100/yr subscription from Apple).

Done in https://github.com/qwerty-fr/qwerty-fr/commit/95b70bbd7bcc0ec815c748f6f162fd29c827e5c2.

[devnoname120]

I decided to add a DMG in addition to PKG to make it easier for some users to install it.