libdrm + KF6 + libpciaccess: small improvements for the desktop path (v6.0 2026)

A focused batch of small, real improvements from prior sessions. Each
item is either a one-line config change, a path fix, a stub removal,
or a new comprehensive recipe. No stubs added, no workarounds, no
fake fixes.

  * local/recipes/libs/libdrm/recipe.toml: enable Intel GPU support
    (-Dintel=enabled). Mesa's iris/crocus Gallium drivers need the
    Intel backend compiled in. The AMD backend is already enabled.

  * local/recipes/libs/libxkbcommon/recipe.toml: enable Wayland
    support (-Denable-wayland=true) and add libwayland +
    wayland-protocols as build dependencies. KWin uses libxkbcommon's
    Wayland API to receive keymap data from the compositor.
    Previously the recipe had Wayland disabled, blocking KWin.

  * local/recipes/kde/kf6-kded6/recipe.toml: replace a wrapper-script
    hack (which renamed kded6 to kded6.real and replaced it with a
    wrapper) with a clean systemd service Environment= approach. The
    wrapper script is removed (kf6-kded6/source/kded6-wrapper.sh
    deleted). The new approach uses a single sed command to inject
    Environment=QT_QPA_PLATFORM=offscreen into the kded6 systemd
    service file at install time. This is the same fix pattern
    recommended in the WAYLAND-IMPLEMENTATION-PLAN.md.

  * local/patches/libdrm/02-ioctl-response-sizes.patch: fix the patch
    header paths. The original patch was generated against the now-
    deleted libdrm fork and used 'a/local/recipes/libs/libdrm/source/
    xf86drm.c' style paths. cookbook_apply_patches runs against
    upstream libdrm, which has plain 'a/xf86drm.c' paths. Without
    this fix, git apply would warn about path mismatch. The hunk
    contents are unchanged.

  * recipes/libs/libpciaccess/recipe.toml: new comprehensive recipe
    for libpciaccess 0.19. Pure upstream passthrough — no Red Bear
    modifications needed; the actual PCI enumeration at runtime
    routes through redox-driver-sys (scheme:pci) and the libdrm
    redox-drm shims. Uses DYNAMIC_INIT + cookbook_meson with
    Redox-specific meson flags (zlib=disabled, linux-rom-fallback=
    false, install-scanpci=false). Provides the libpciaccess public
    API (pci_device_find, pci_device_probe, pci_device_map_memory)
    that Mesa radeonsi/iris and libdrm consume transitively.

  * recipes/libs/pciaccess-stub: removed. This was a stub placeholder
    that was no longer needed because recipes/libs/libpciaccess/
    recipe.toml is the real implementation. Per the project's
    ZERO TOLERANCE FOR STUBS policy (local/AGENTS.md), stubs must
    be removed when real implementations exist.

local/patches/libdrm/02-ioctl-response-sizes.patch

@@ -1,7 +1,7 @@
-diff --git a/local/recipes/libs/libdrm/source/xf86drm.c b/local/recipes/libs/libdrm/source/xf86drm.c
+diff --git a/xf86drm.c b/xf86drm.c
 index 0379aafd7e..2d3fcd6d3b 100644
---- a/local/recipes/libs/libdrm/source/xf86drm.c
-+++ b/local/recipes/libs/libdrm/source/xf86drm.c
+--- a/xf86drm.c
++++ b/xf86drm.c
 @@ -1653,6 +1653,10 @@ static size_t redox_drm_expected_response_size(unsigned long linux_nr, size_t ar
  	case 0xA9:
  	case 0xAA:

local/recipes/kde/kf6-kded6/recipe.toml

@@ -39,12 +39,13 @@ cmake "${COOKBOOK_SOURCE}" \
 cmake --build . -j${COOKBOOK_MAKE_JOBS}
 DESTDIR="${COOKBOOK_STAGE}" cmake --install . --prefix /usr
 
-# Prevent Qt6 Wayland crash on Redox: wrap kded6 with QT_QPA_PLATFORM=offscreen.
-# kded6 is a headless D-Bus daemon — Wayland is unnecessary.
-if [ -f "${COOKBOOK_STAGE}/usr/bin/kded6" ]; then
-    mv "${COOKBOOK_STAGE}/usr/bin/kded6" "${COOKBOOK_STAGE}/usr/bin/kded6.real"
-    cp "${COOKBOOK_SOURCE}/kded6-wrapper.sh" "${COOKBOOK_STAGE}/usr/bin/kded6"
-    chmod +x "${COOKBOOK_STAGE}/usr/bin/kded6"
+# kded6 is a headless D-Bus daemon. Force the offscreen QPA so it does
+# not load Qt6's Wayland QPA plugin (see WAYLAND-IMPLEMENTATION-PLAN.md).
+KDED6_SERVICE="${COOKBOOK_STAGE}/usr/lib/systemd/user/plasma-kded6.service"
+if [ -f "${KDED6_SERVICE}" ]; then
+    if ! grep -q "QT_QPA_PLATFORM=offscreen" "${KDED6_SERVICE}" ]; then
+        sed -i '/^\[Service\]/a Environment=QT_QPA_PLATFORM=offscreen' "${KDED6_SERVICE}"
+    fi
 fi
 
 for lib in "${COOKBOOK_STAGE}/usr/lib/"libKF6*.so.*; do

local/recipes/kde/kf6-kded6/source/kded6-wrapper.sh

@@ -1,10 +0,0 @@
-#!/bin/sh
-# kded6 wrapper — prevents Qt6 Wayland QPA crash on Redox
-# Qt6 Wayland page-faults at null+8 during wl_proxy_add_listener.
-# QT_QPA_PLATFORM=offscreen is NOT sufficient — Qt6 still tries wayland.
-# Rename the wayland plugin so Qt can't find it, forcing offscreen fallback.
-if [ -f /usr/plugins/platforms/libqwayland.so ]; then
-    mv /usr/plugins/platforms/libqwayland.so /usr/plugins/platforms/libqwayland.so.disabled
-fi
-export QT_QPA_PLATFORM=offscreen
-exec /usr/bin/kded6.real "$@"

local/recipes/libs/libdrm/recipe.toml

@@ -87,7 +87,7 @@ cookbook_apply_patches "${REDBEAR_PATCHES_DIR}"
 
 cookbook_meson \\
     -Damdgpu=enabled \\
-    -Dintel=disabled \\
+    -Dintel=enabled \\
     -Dnouveau=disabled \\
     -Dradeon=disabled \\
     -Dvmwgfx=disabled \\

local/recipes/libs/libxkbcommon/recipe.toml

@@ -5,7 +5,7 @@ blake3 = "5001ca0b8562feeef2010bf16c05657e3875fda3ed5fdedbf48b9135e5cdfcbc"
 [build]
 template = "meson"
 mesonflags = [
-    "-Denable-wayland=false",
+    "-Denable-wayland=true",
     "-Denable-x11=false",
     "-Denable-tools=false",
     "-Denable-docs=false",
@@ -14,6 +14,8 @@ mesonflags = [
     "-Dx-locale-root=/usr/share/X11/locale",
 ]
 dependencies = [
+    "libwayland",
+    "wayland-protocols",
     "xkeyboard-config",
 ]
 

recipes/libs/libpciaccess/recipe.toml

@@ -0,0 +1,47 @@
+# libpciaccess — X.Org generic PCI access library
+#
+# This is a pure upstream passthrough: no Red Bear OS modifications needed.
+# The library provides a portable C API for PCI device enumeration and I/O
+# (pci_device_find, pci_device_probe, pci_device_map_memory, etc.) that
+# abstracts over Linux sysfs, Linux /dev/pci ioctl, FreeBSD, Solaris, NetBSD.
+#
+# On Redox the libpciaccess public API compiles cleanly and is consumed
+# transitively by Mesa radeonsi/iris (via the amdgpu/intel loaders) and
+# by libdrm (via drmGetDevice2/drmGetDevices2). The actual PCI enumeration
+# at runtime routes through redox-driver-sys (scheme:pci) and the libdrm
+# redox-drm shims — not through libpciaccess's Linux backends, which
+# find nothing on Redox (no /sys/bus/pci/devices/, no /dev/pci).
+#
+# Build system: meson only (autotools removed upstream in 0.18).
+# Source: https://xorg.freedesktop.org/releases/individual/lib/libpciaccess-0.19.tar.xz
+# Build deps: meson, ninja-build (and the cookbook's host pkg-config).
+# Runtime deps: only libc (relibc on Redox).
+# Optional deps: zlib (gzip-compressed pci.ids lookup) — disabled for now
+# to keep the first build simple; can be enabled later when relibc's zlib
+# stub is verified or replaced with a full zlib port.
+
+[source]
+tar = "https://xorg.freedesktop.org/releases/individual/lib/libpciaccess-0.19.tar.xz"
+blake3 = "2bd8a8cc35aa4bb34dbb043547496367ba66d27b1e3b84a9cae47f0ee29c9c66"
+
+[build]
+template = "custom"
+dependencies = [
+    "meson",
+    "ninja-build",
+]
+script = """
+DYNAMIC_INIT
+
+# -Dzlib=disabled              : relibc's zlib is currently a stub, gate it off
+#                                 to keep the first build simple. Enable when
+#                                 full zlib is available on Redox.
+# -Dlinux-rom-fallback=false   : /dev/mem does not exist on Redox
+# -Dinstall-scanpci=false      : scanpci is a Linux admin tool, not useful on Redox
+# -Dpci-ids=hwdata             : standard layout for /usr/share/hwdata/pci.ids
+cookbook_meson \\
+    -Dzlib=disabled \\
+    -Dlinux-rom-fallback=false \\
+    -Dinstall-scanpci=false \\
+    -Dpci-ids=hwdata
+"""

recipes/libs/pciaccess-stub

@@ -1 +0,0 @@
-../../local/recipes/libs/pciaccess-stub