8c35e8b4b1
The libepoxy-stub provided a hardcoded stub that returned 0/NULL for every epoxy_egl_extension_supported, epoxy_has_gl_extension, and epoxy_gl_version call, plus a fake epoxyConfig.cmake. KWin and Qt6 Wayland code paths were never able to detect GL/EGL extensions or negotiate GL versions, which broke the KWin rendering pipeline silently. Replace it with the real libepoxy (anholt/libepoxy fork) — the full upstream C source, built against Mesa EGL/GLES2, that registers epoxy::epoxy in CMake, provides libepoxy.pc, and produces the real epoxy_gl_version / epoxy_has_gl_extension / epoxy_egl_*_supported runtime values. Recipe bumped to 0.2.3 with v6.0 2026 description. Also: protected-recipes.toml [libs] no longer lists the stub.