A minimal GTK4/Libadwaita desktop app for backing up installed Flatpak and Snap application lists on Ubuntu 24.04+. Built with Vala and Meson.

• Two tabs: Backup and Restore (stub)
• Detects installed platforms (Flatpak, Snap) at runtime
• Exports app lists to text files and bundles them into a timestamped zip
• Saves backups to your Desktop with unique names
• Status bar shows progress and completion

A backup creates a zip like:

~/Desktop/appstate-YYYYMMDD-HHMMSS.zip
├── flatpaks.txt   # one "app.id remote" per line
└── snaps.txt      # one snap name per line

Restore is currently a placeholder in the UI.

• Ubuntu 24.04+
• GTK4 (>= 4.10)
• Libadwaita (>= 1.4)
• Vala (>= 0.56)
• Meson (>= 0.60)
• zip installed

meson setup build
meson compile -C build
./build/appstate-backup

meson test -C build

• Backup destinations use your XDG Desktop directory when available.
• Checkbox states do not persist between sessions.

TBD