Motivation

The xcap crate's Linux support creates significant maintenance burden:

Heavy dependencies

xcap 0.5.0+ requires pipewire, wayland, dbus, and other system libraries not available in standard CI/cross-compilation environments. Issue APPAI-1153 raised by @DOsinga - xcap contributes to large binary size.

Cross-compilation blockers

• Cross-rs uses Ubuntu 20.04 for glibc compatibility
• Ubuntu 20.04 lacks pipewire in standard repos
• PPA approach fails due to GPG signature issues in Docker
• PR #4344 attempted xcap 0.7.0 upgrade, was closed after months of CI failures

Version lock

To avoid Linux deps, we're locked to xcap 0.4.0 which:

• Uses objc2 (fixes macOS core-foundation 0.10.1 compatibility)
• Only needs dbus + xcb on Linux (already in Cross.toml)
• v0.4.1+ adds libwayshot, v0.5.0+ adds pipewire/zbus

Proposal

Remove screen capture support on Linux while keeping it on macOS/Windows.

Alternatives Considered

Implementation

Use conditional compilation to exclude screen capture on Linux:

#[cfg(not(target_os = "linux"))]
use xcap::{Monitor, Window};

#[cfg(not(target_os = "linux"))]
#[tool(...)]
pub async fn list_windows(...) { ... }

#[cfg(not(target_os = "linux"))]
#[tool(...)]  
pub async fn screen_capture(...) { ... }

Update Cargo.toml:

[target.'cfg(not(target_os = "linux"))'.dependencies]
xcap = "0.8.0"