vasilito
36c8c3d95a
ROOT CAUSE: Qt6's auto-generated Wayland wrappers pass NULL proxies to wl_*_add_listener() during initialization. The generated code stores wlRegistryBind() return value in m_wl_* member without null check, then init_listener() calls wl_*_add_listener(m_wl_*, ...) which page-faults at null+8 (write to proxy->object.implementation). FIX (kded6): wrapper script renames libqwayland.so to .disabled before launching kded6.real. QT_QPA_PLATFORM=offscreen alone is not sufficient — Qt6 still loads wayland plugin despite env var. FIX (libwayland): null guards in redox.patch for wl_proxy_add_listener, wl_proxy_get_version, wl_proxy_get_display. Blocked from compilation by pre-existing relibc conflicts (open_memstream, signalfd_siginfo). FIX (Qt6 wrappers): regex-based null guard insertion proven in concept. Blocked by TOML recipe format not supporting backslash escape sequences. Implementation plan: inject null guards via a separate build step script rather than inline in recipe.toml.
Wayland
Wayland is a project to define a protocol for a compositor to talk to its clients as well as a library implementation of the protocol. The compositor can be a standalone display server running on Linux kernel modesetting and evdev input devices, an X application, or a wayland client itself. The clients can be traditional applications, X servers (rootless or fullscreen) or other display servers.
The wayland protocol is essentially only about input handling and buffer management. The compositor receives input events and forwards them to the relevant client. The clients creates buffers and renders into them and notifies the compositor when it needs to redraw. The protocol also handles drag and drop, selections, window management and other interactions that must go through the compositor. However, the protocol does not handle rendering, which is one of the features that makes wayland so simple. All clients are expected to handle rendering themselves, typically through cairo or OpenGL.
Building the wayland libraries is fairly simple, aside from libffi, they don't have many dependencies:
$ git clone https://gitlab.freedesktop.org/wayland/wayland
$ cd wayland
$ meson build/ --prefix=PREFIX
$ ninja -C build/ install
where PREFIX is where you want to install the libraries.
See https://wayland.freedesktop.org for documentation.