overthinkos/xdg-portal-gnome
ov-layers/skills/xdg-portal-gnome/SKILL.md
GNOME XDG Desktop Portal backend with ScreenCast, RemoteDesktop, and AT-SPI2 support. Use when working with GNOME portals, screen sharing, or libei input in Mutter containers.
development
Updated Apr 27, 2026
$ install --global
skillsauthnpx skillsauth add overthinkos/overthink-plugins xdg-portal-gnomeInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 27, 2026, 9:39 AM218.5s1 file scanned
SKILL.md
- name:
- xdg-portal-gnome
- description:
- |
xdg-portal-gnome -- GNOME XDG Desktop Portal backend
Layer Properties
| Property | Value |
|----------|-------|
| Dependencies | dbus, mutter, pipewire |
| Install files | layer.yml, tasks:, portals.conf |
Environment Variables
| Variable | Value |
|----------|-------|
| XDG_CURRENT_DESKTOP | GNOME |
Packages
xdg-desktop-portal(RPM) -- Portal daemonxdg-desktop-portal-gnome(RPM) -- GNOME portal backend (ScreenCast, RemoteDesktop)xdg-desktop-portal-gtk(RPM) -- GTK fallback for file dialogs etc.python3-gobject(RPM) -- AT-SPI2 access for portal auto-accept
Portal Configuration
portals.conf (installed to ~/.config/xdg-desktop-portal/portals.conf):
[preferred]
default=gnome
org.freedesktop.impl.portal.ScreenCast=gnome
org.freedesktop.impl.portal.RemoteDesktop=gnome
Key Requirement: XDG_SESSION_TYPE
The GNOME portal backend checks XDG_SESSION_TYPE at startup. Without XDG_SESSION_TYPE=wayland, it fails with "Unsupported or missing session type ''" and does not register ScreenCast/RemoteDesktop interfaces. This is set by the mutter layer.
Related Layers
/ov-layers:dbus-- D-Bus session bus (dependency)/ov-layers:mutter-- Mutter compositor (dependency)/ov-layers:pipewire-- PipeWire media server (dependency)/ov-layers:xdg-portal-- Sway variant (uses xdg-desktop-portal-wlr)/ov-layers:xdg-portal-kde-- KDE variant (uses xdg-desktop-portal-kde)/ov-layers:xdg-portal-niri-- Niri variant/ov-layers:mutter-desktop-- composition that includes this layer
Used In Images
Not used in any current image definition. Part of the mutter-desktop metalayer composition.
When to Use This Skill
Use when working with:
- XDG Desktop Portal on GNOME/Mutter
- Screen sharing in GNOME containers
- Portal-based input injection (libei/EIS)
Related
/ov:layer— layer authoring reference (layer.ymlschema, task verbs, service declarations)/ov:test— declarative testing (tests:block,ov image test,ov test)
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