Initial commit of OS

etc/chromium/chromium.conf

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+# system wide chromium flags
+
+ARCH="$(arch)"
+MODE="$(systemd-detect-virt)"
+
+# GRAPHIC_DRIVER=[amd|intel|nvidia|default]
+GRAPHIC_DRIVER=intel
+
+# WEB_DARKMODE=[on|off]
+WEB_DARKMODE=off
+
+# NATIVE_WAYLAND=[on|off]
+# chromium >=141 switched to --ozone-platform-hint=auto
+if [ ! -z "$WAYLAND_DISPLAY" ]; then
+   NATIVE_WAYLAND=on
+else
+   NATIVE_WAYLAND=off
+fi
+
+DISABLE_FEATURES="LensOverlay,ExtensionManifestV2Unsupported,ExtensionManifestV2Disabled"
+ENABLE_FEATURES="AllowQt"
+CHROMIUM_FLAGS=" --enable-chrome-browser-cloud-management"
+if [ "$NATIVE_WAYLAND" == "on" ] ; then
+   ENABLE_FEATURES+=",WaylandLinuxDrmSyncobj,WaylandPerSurfaceScale,WaylandUiScale"
+   CHROMIUM_FLAGS+=" --ozone-platform=wayland"
+else
+   CHROMIUM_FLAGS+=" --enable-gpu-memory-buffer-video-frames"
+   CHROMIUM_FLAGS+=" --enable-zero-copy"
+   CHROMIUM_FLAGS+=" --ignore-gpu-blocklist --disable-gpu-driver-bug-workaround"
+   CHROMIUM_FLAGS+=" --enable-gpu-rasterization"
+fi
+
+ENABLE_FEATURES+=",AcceleratedVideoDecodeLinuxGL,AcceleratedVideoDecodeLinuxZeroCopyGL"
+
+case "$GRAPHIC_DRIVER" in
+   amd|intel)
+      # Need new mesa with AMD multi planes support, is supported in fedora >= 40 (mesa-24.1.1 or newer)
+      # see https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26165
+      CHROMIUM_FLAGS+=" --enable-accelerated-video-decode"
+      ENABLE_FEATURES+=",VaapiIgnoreDriverChecks,UseMultiPlaneFormatForHardwareVideo"
+      ;;
+   nvidia)
+      # The NVIDIA VaAPI drivers are known to not support Chromium
+      # see https://crbug.com/1492880. This feature switch is
+      # provided for developers to test VaAPI drivers on NVIDIA GPUs
+      ENABLE_FEATURES+=",VaapiOnNvidiaGPUs"
+      export CUDA_DISABLE_PERF_BOOST=1
+      ;;
+   *)
+      ENABLE_FEATURES+=",AcceleratedVideoEncoder"
+      ;;
+esac
+
+if [ "$MODE" != "none" ] ; then
+   # chromium in VM, running with standard setting
+   CHROMIUM_FLAGS=""
+   DISABLE_FEATURES=""
+   ENABLE_FEATURES=""
+fi
+
+# Set gtk version to 3 by default
+# todo: switch to gtk4 in the future
+CHROMIUM_FLAGS+=" --gtk-version=3"
+
+# Web Dark mode
+if [ "$WEB_DARKMODE" == "on" ] ; then
+   darktype="WebContentsForceDark:inversion_method/cielab_based/image_behavior/none/foreground_lightness_threshold/150/background_lightness_threshold/205"
+   if [ -z "$ENABLE_FEATURES" ] ; then
+       ENABLE_FEATURES+="$darktype"
+   else
+       ENABLE_FEATURES+=",$darktype"
+   fi
+fi
+
+[ -z "$DISABLE_FEATURES" ] || CHROMIUM_FLAGS+=" --disable-features=$DISABLE_FEATURES"
+[ -z "$ENABLE_FEATURES" ] || CHROMIUM_FLAGS+=" --enable-features=$ENABLE_FEATURES"

etc/environment

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+QT_QPA_PLATFORM=wayland
+#CLUTTER_PAINT=disable-dynamic-max-render-time
+#MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0
+#MUTTER_DEBUG_TRIPLE_BUFFERING=never
+
+# Nvidia:
+#__NV_PRIME_RENDER_OFFLOAD=1
+#__GLX_VENDOR_LIBRARY_NAME=nvidia
+
+ELECTRON_OZONE_PLATFORM_HINT=wayland
+
+#GSK_RENDERER=gl

etc/systemd/zram-generator.conf

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+# This config file enables a /dev/zram0 device with the default settings:
+# — size — same as available RAM or 30GB, whichever is less
+# — compression — most likely lzo-rle
+#
+# To disable, create empty
+# /etc/systemd/zram-generator.conf file.
+[zram0]
+zram-size = min(ram, 30720)
+compression-algorithm = zstd