Ability to fetch debug information from the app

[flxzt]

I noticed other apps like Pika Backup have functionality to retrieve extensive debug information from the application itself:

This app has a "Troubleshooting" sub-menu in the help dialog from which this information can be fetched.
We should introduce something similar and require it when opening issues.

Pika backup fetches the following information on my machine:

• Version: 0.7.5
• Commit: c802cb1
• App ID: org.gnome.World.PikaBackup
• Sandboxed: true (flatpak)
• BorgBackup Version: borg 1.4.1

OS Information

NAME="Fedora Linux"
VERSION="43 (Workstation Edition)"
RELEASE_TYPE=stable
ID=fedora
VERSION_ID=43
VERSION_CODENAME=""
PRETTY_NAME="Fedora Linux 43 (Workstation Edition)"
ANSI_COLOR="0;38;2;60;110;180"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:43"
DEFAULT_HOSTNAME="fedora"
HOME_URL="https://fedoraproject.org/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f43/"
SUPPORT_URL="https://ask.fedoraproject.org/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=43
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=43
SUPPORT_END=2026-12-02
VARIANT="Workstation Edition"
VARIANT_ID=workstation

Flatpak Information

Ok(
    FlatpakInfo {
        instance: Instance {
            app_commit: Some(
                "5b8ae021f079a58720e99c34ee5f30fea1acad813144319c38829f65b4700013",
            ),
            flatpak_version: Some(
                "1.16.2",
            ),
        },
        context: {
            "shared": "network;ipc;",
            "devices": "all;",
            "sockets": "x11;wayland;fallback-x11;ssh-auth;",
            "filesystems": "~/.var/app;xdg-run/gvfsd;xdg-run/pika-backup:create;/var:ro;xdg-run/gvfs;xdg-data/flatpak:ro;host;",
            "unset-environment": "GTK_THEME;LD_PRELOAD;",
        },
        session_bus_policy: {
            "org.gtk.MountOperationHandler": "talk",
            "org.freedesktop.Flatpak.*": "talk",
            "org.gtk.vfs.*": "talk",
        },
        system_bus_policy: {
            "org.freedesktop.UPower": "talk",
        },
    },
)

User Autostart

[Desktop Entry]
Type=Application
Name=org.gnome.World.PikaBackup
X-XDP-Autostart=org.gnome.World.PikaBackup
Exec=flatpak run --command=pika-backup-monitor org.gnome.World.PikaBackup
X-Flatpak=org.gnome.World.PikaBackup

Global Autostart

[Doublonmousse]

For us we'll probably want to query some information on the gtk4/libadwaita installation.

For gtk4 we can get . . programatically.

Same thing for adwaita https://docs.rs/libadwaita/latest/libadwaita/fn.major_version.html

I don't know if it's possible/needed to get more gtk stuff shown from the inspector (maybe we can also include a way to open the gtk inspector from rnote if needed). I'm thinking about the gsk renderer