Red Bear OS — microkernel OS in Rust, based on Redox

Derivative of Redox OS (https://www.redox-os.org) adding:
- AMD GPU driver (amdgpu) via LinuxKPI compat layer
- ext4 filesystem support (ext4d scheme daemon)
- ACPI fixes for AMD bare metal (x2APIC, DMAR, IVRS, MCFG)
- Custom branding (hostname, os-release, boot identity)

Build system is full upstream Redox with RBOS overlay in local/.
Patches for kernel, base, and relibc are symlinked from local/patches/
and protected from make clean/distclean. Custom recipes live in
local/recipes/ with symlinks into the recipes/ search path.

Build:  make all CONFIG_NAME=redbear-full
Sync:   ./local/scripts/sync-upstream.sh

recipes/wip/games/fps/zerospades-free/recipe.toml

@@ -0,0 +1,43 @@
+#TODO dependency conflict. Glew wants GLX but mesa uses orbital backend.
+# build instructions: https://github.com/yvt/openspades#on-unixes-from-source
+[source]
+git = "https://github.com/siecvi/zerospades"
+shallow_clone = true
+patches = [
+    "redox.patch"
+]
+
+[build]
+template = "custom"
+dependencies = [
+    "glew",
+    "openssl3",
+    "sdl2",
+    "sdl2-image",
+    "freealut",
+    "freetype2",
+    "libopus",
+    "opusfile",
+    "libjpeg",
+    "openal",
+    "curl",
+    # "libxinerama",
+    # "libxft",
+]
+dev-dependencies = [
+    "libstdcxx",
+]
+script = """
+DYNAMIC_INIT
+export LDFLAGS+=" $("${PKG_CONFIG}" --libs osmesa)"
+COOKBOOK_CMAKE_FLAGS+=(
+    -DOPENSPADES_NONFREE_RESOURCES=OFF
+    -DUSE_INTERNAL_OPENAL=OFF
+)
+cookbook_cmake
+"""
+
+[package]
+dependencies = [
+    "openspades-free-pak"
+]