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/dev/lang/python39/recipe.toml

@@ -0,0 +1,62 @@
+#TODO Fix dynamic loading of C modules
+[source]
+tar = "https://www.python.org/ftp/python/3.9.9/Python-3.9.9.tar.xz"
+patches = [
+  'redox.patch'
+]
+
+[build]
+template = "custom"
+dependencies = [
+    "bzip2",
+    "libffi",
+    "libuuid",
+    "ncurses",
+    "ncursesw",
+    "openssl1",
+    "readline",
+    "sqlite3",
+    "zlib",
+    "xz"
+]
+script = """
+DYNAMIC_INIT
+export PYTHONDONTWRITEBYTECODE=1
+ARCH="${TARGET%%-*}"
+
+# Python cross-compilation requires the same Python version on the build machine
+BUILDMACH_TARGET="$(gcc -dumpmachine)"
+BUILDMACH_BUILD="${COOKBOOK_RECIPE}/target/${BUILDMACH_TARGET}/build"
+BUILDMACH_STAGE="${COOKBOOK_RECIPE}/target/${BUILDMACH_TARGET}/stage"
+
+# If this is a fresh build then we also rebuild the build machine version
+# (Cookbook clean does not remove it so we have to do it manually)
+if [ -z "$(ls -A .)" ]; then
+  rm -rf "${BUILDMACH_BUILD}" "${BUILDMACH_STAGE}"
+fi
+
+mkdir -p "${BUILDMACH_BUILD}"
+mkdir -p "${BUILDMACH_STAGE}"
+
+cd "${BUILDMACH_BUILD}"
+# Use env that does not use the Redox build tools
+env -i PATH="$PATH" CC="$CC_WRAPPER gcc" "${COOKBOOK_SOURCE}/configure"
+env -i PATH="$PATH" CC="$CC_WRAPPER gcc" "${COOKBOOK_MAKE}" -j "${COOKBOOK_MAKE_JOBS}"
+"${COOKBOOK_MAKE}" install DESTDIR="${BUILDMACH_STAGE}"
+cd -
+
+export PATH="${BUILDMACH_STAGE}/usr/local/bin:${PATH}"
+
+COOKBOOK_CONFIGURE_FLAGS=(
+    --prefix=/usr
+    --enable-shared
+    --disable-ipv6
+    --host=${GNU_TARGET}
+    --build=$ARCH
+    --with-ensurepip=install
+    ac_cv_file__dev_ptmx=no
+    ac_cv_file__dev_ptc=no
+)
+
+cookbook_configure
+"""