Implement autoupdates for pacman

[xyloflake]

Description

Currently, auto-updates on Linux are only functional with .deb, .rpm, or .appimage formats due to limitations in both app-builder-lib and electron-updater.

Challenges

• Incompatible Update Handling: electron-updater assumes that non-Debian platforms have the dpkg command available and attempts to update via .deb files. This leads to issues on systems like Arch Linux, where users encounter a message stating, "An update has been downloaded and will be installed on exit." Upon closing the app, it prompts for sudo access but fails to complete the update, often resulting in the app disappearing without warning. Users may find themselves stuck in a loop, expecting the app to auto-update when it does not.

• Lack of Package Manager Detection: There is no current implementation in electron-updater for detecting the appropriate package manager for updates. This lack of detection creates confusion in selecting the correct files for auto-updates and determining which package manager to use for the update process.

Edit: Found a way to fetch the package-type

[xyloflake]

Status: 100% implemented ✅

Bug discovered 🔴

Window is tagged as unresponsive when waiting for the updater to finish. Fixing soon.

Demo

Screencast.from.2024-07-31.19-32-58.webm

[xyloflake]

Pushed 0ec5a95

However, the freezing still occurs while autoupdating.

[xyloflake]

electron-userland/electron-builder#8394

Made a PR in electron-builder. Closing this and creating a separate issue for the freeze bug