update electron to v43

electron/node_modules/app-builder-lib/templates/snap/desktop-common.sh

@@ -0,0 +1,444 @@
+#!/bin/bash -e
+
+###############################################
+# Launcher common exports for any desktop app #
+###############################################
+
+function prepend_dir() {
+  local var="$1"
+  local dir="$2"
+  if [ -d "$dir" ]; then
+    eval "export $var=\"\$dir\${$var:+:\$$var}\""
+  fi
+}
+
+function append_dir() {
+  local var="$1"
+  local dir="$2"
+  if [ -d "$dir" ]; then
+    eval "export $var=\"\${$var:+\$$var:}\$dir\""
+  fi
+}
+
+function can_open_file() {
+  head -c0 "$1" &> /dev/null
+}
+
+function update_xdg_dirs_values() {
+  local save_initial_values=false
+  local XDG_DIRS="DOCUMENTS DESKTOP DOWNLOAD MUSIC PICTURES VIDEOS PUBLICSHARE TEMPLATES"
+  unset XDG_SPECIAL_DIRS_PATHS
+
+  if [ -f "${XDG_CONFIG_HOME:-$HOME/.config}/user-dirs.dirs" ]; then
+    # shellcheck source=/dev/null
+    source "${XDG_CONFIG_HOME:-$HOME/.config}/user-dirs.dirs"
+  fi
+
+  if [ -z ${XDG_SPECIAL_DIRS+x} ]; then
+    save_initial_values=true
+  fi
+
+  for d in $XDG_DIRS; do
+    var="XDG_${d}_DIR"
+    value="${!var}"
+
+    if [ "$save_initial_values" = true ]; then
+      XDG_SPECIAL_DIRS+=("$var")
+      if [ -n "$value" ]; then
+        XDG_SPECIAL_DIRS_INITIAL_PATHS+=("$value")
+      fi
+    fi
+
+    if [ -n "$value" ]; then
+      XDG_SPECIAL_DIRS_PATHS+=("$value")
+    fi
+  done
+}
+
+function is_subpath() {
+  dir="$(realpath "$1")"
+  parent="$(realpath "$2")"
+  [ "${dir##$parent/}" != "$dir" ] && return 0 || return 1
+}
+
+if [ -n "$SNAP_DESKTOP_RUNTIME" ]; then
+  # add general paths not added by snapcraft due to runtime snap
+  append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/lib/$SNAP_DESKTOP_ARCH_TRIPLET"
+  append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET"
+  append_dir PATH "$SNAP_DESKTOP_RUNTIME/usr/bin"
+fi
+
+# XKB config
+export XKB_CONFIG_ROOT="$SNAP_DESKTOP_RUNTIME/usr/share/X11/xkb"
+
+# Give XOpenIM a chance to locate locale data.
+# This is required for text input to work in SDL2 games.
+export XLOCALEDIR="$SNAP_DESKTOP_RUNTIME/usr/share/X11/locale"
+
+# Set XCursors path
+export XCURSOR_PATH="$SNAP_DESKTOP_RUNTIME/usr/share/icons"
+prepend_dir XCURSOR_PATH "$SNAP/data-dir/icons"
+
+# Mesa Libs for OpenGL support
+append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/mesa"
+append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/mesa-egl"
+
+# Tell libGL where to find the drivers
+export LIBGL_DRIVERS_PATH="$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/dri"
+append_dir LD_LIBRARY_PATH "$LIBGL_DRIVERS_PATH"
+export LIBVA_DRIVERS_PATH=$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/dri
+
+# Workaround in snapd for proprietary nVidia drivers mounts the drivers in
+# /var/lib/snapd/lib/gl that needs to be in LD_LIBRARY_PATH
+# Without that OpenGL using apps do not work with the nVidia drivers.
+# Ref.: https://bugs.launchpad.net/snappy/+bug/1588192
+append_dir LD_LIBRARY_PATH /var/lib/snapd/lib/gl
+
+# Unity7 export (workaround for https://launchpad.net/bugs/1638405)
+append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/libunity"
+
+# Pulseaudio export
+append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/pulseaudio"
+
+# EGL vendor files on glvnd enabled systems
+[ -d /var/lib/snapd/lib/glvnd/egl_vendor.d ] && \
+    append_dir __EGL_VENDOR_LIBRARY_DIRS /var/lib/snapd/lib/glvnd/egl_vendor.d
+
+# Tell GStreamer where to find its plugins
+export GST_PLUGIN_PATH="$SNAP/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gstreamer-1.0"
+export GST_PLUGIN_SYSTEM_PATH="$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gstreamer-1.0"
+# gst plugin scanner doesn't install in the correct path: https://github.com/ubuntu/snapcraft-desktop-helpers/issues/43
+export GST_PLUGIN_SCANNER="$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gstreamer1.0/gstreamer-1.0/gst-plugin-scanner"
+
+# XDG Config
+[ -n "$SNAP_DESKTOP_RUNTIME" ] && prepend_dir XDG_CONFIG_DIRS "$SNAP_DESKTOP_RUNTIME/etc/xdg"
+prepend_dir XDG_CONFIG_DIRS "$SNAP/etc/xdg"
+
+# Define snaps' own data dir
+[ -n "$SNAP_DESKTOP_RUNTIME" ] && prepend_dir XDG_DATA_DIRS "$SNAP_DESKTOP_RUNTIME/usr/share"
+prepend_dir XDG_DATA_DIRS "$SNAP/usr/share"
+prepend_dir XDG_DATA_DIRS "$SNAP/share"
+prepend_dir XDG_DATA_DIRS "$SNAP/data-dir"
+prepend_dir XDG_DATA_DIRS "$SNAP_USER_DATA"
+
+# Set XDG_DATA_HOME to local path
+export XDG_DATA_HOME="$SNAP_USER_DATA/.local/share"
+mkdir -p "$XDG_DATA_HOME"
+
+# Workaround for GLib < 2.53.2 not searching for schemas in $XDG_DATA_HOME:
+#   https://bugzilla.gnome.org/show_bug.cgi?id=741335
+prepend_dir XDG_DATA_DIRS "$XDG_DATA_HOME"
+
+# Set cache folder to local path
+export XDG_CACHE_HOME="$SNAP_USER_COMMON/.cache"
+if [[ -d "$SNAP_USER_DATA/.cache" && ! -e "$XDG_CACHE_HOME" ]]; then
+  # the .cache directory used to be stored under $SNAP_USER_DATA, migrate it
+  mv "$SNAP_USER_DATA/.cache" "$SNAP_USER_COMMON/"
+fi
+mkdir -p "$XDG_CACHE_HOME"
+
+# Set config folder to local path
+export XDG_CONFIG_HOME="$SNAP_USER_DATA/.config"
+mkdir -p "$XDG_CONFIG_HOME"
+
+# Create $XDG_RUNTIME_DIR if not exists (to be removed when LP: #1656340 is fixed)
+if [ -n "$XDG_RUNTIME_DIR" ]; then
+  mkdir -p "$XDG_RUNTIME_DIR"
+  chmod 700 "$XDG_RUNTIME_DIR"
+fi
+
+# Ensure the app finds locale definitions (requires locales-all to be installed)
+append_dir LOCPATH "$SNAP_DESKTOP_RUNTIME/usr/lib/locale"
+
+# If any, keep track of where XDG dirs were so we can potentially migrate the content later
+update_xdg_dirs_values
+
+# Setup user-dirs.* or run xdg-user-dirs-update if needed
+needs_xdg_update=false
+needs_xdg_reload=false
+needs_xdg_links=false
+
+if [ "$HOME" != "$SNAP_USER_DATA" ] && ! is_subpath "$XDG_CONFIG_HOME" "$HOME"; then
+  for f in user-dirs.dirs user-dirs.locale; do
+    if [ -f "$HOME/.config/$f" ]; then
+      mv "$HOME/.config/$f" "$XDG_CONFIG_HOME"
+      needs_xdg_reload=true
+    fi
+  done
+fi
+
+if can_open_file "$REALHOME/.config/user-dirs.dirs" && can_open_file "$REALHOME/.config/user-dirs.locale"; then
+  if [ "$SNAP_DESKTOP_COMPONENTS_NEED_UPDATE" = "true" ] || [ $needs_xdg_reload = true ]; then
+    sed "/^#/!s#\$HOME#${REALHOME}#g" "$REALHOME/.config/user-dirs.dirs" > "$XDG_CONFIG_HOME/user-dirs.dirs"
+    cp -a "$REALHOME/.config/user-dirs.locale" "$XDG_CONFIG_HOME"
+    for f in user-dirs.dirs user-dirs.locale; do
+      md5sum < "$REALHOME/.config/$f" > "$XDG_CONFIG_HOME/$f.md5sum"
+    done
+    needs_xdg_reload=true
+  fi
+else
+  needs_xdg_update=true
+  needs_xdg_links=true
+fi
+
+if [ $needs_xdg_reload = true ]; then
+  update_xdg_dirs_values
+  needs_xdg_reload=false
+fi
+
+# Check if we can actually read the contents of each xdg dir
+for ((i = 0; i < ${#XDG_SPECIAL_DIRS_PATHS[@]}; i++)); do
+  if ! can_open_file "${XDG_SPECIAL_DIRS_PATHS[$i]}"; then
+    needs_xdg_update=true
+    needs_xdg_links=true
+    break
+  fi
+done
+
+# If needs XDG update and xdg-user-dirs-update exists in $PATH, run it
+if [ $needs_xdg_update = true ] && command -v xdg-user-dirs-update >/dev/null; then
+  xdg-user-dirs-update
+  update_xdg_dirs_values
+fi
+
+# Create links for user-dirs.dirs
+if [ $needs_xdg_links = true ]; then
+  for ((i = 0; i < ${#XDG_SPECIAL_DIRS_PATHS[@]}; i++)); do
+    b="$(realpath "${XDG_SPECIAL_DIRS_PATHS[$i]}" --relative-to="$HOME")"
+    if [ -e "$REALHOME/$b" ]; then
+      if [ -d "$HOME/$b" ]; then
+        rmdir "$HOME/$b" 2> /dev/null
+      fi
+      if [ ! -e "$HOME/$b" ]; then
+        ln -s "$REALHOME/$b" "$HOME/$b"
+      fi
+    fi
+  done
+else
+  # If we aren't creating new links, check if we have content saved in old locations and move it
+  for ((i = 0; i < ${#XDG_SPECIAL_DIRS[@]}; i++)); do
+    old="${XDG_SPECIAL_DIRS_INITIAL_PATHS[$i]}"
+    new="${XDG_SPECIAL_DIRS_PATHS[$i]}"
+    if [ -L "$old" ] && [ -d "$new" ] && [ "$(readlink "$old")" != "$new" ] &&
+         (is_subpath "$old" "$SNAP_USER_DATA" || is_subpath "$old" "$SNAP_USER_COMMON"); then
+      mv -vn "$old"/* "$new"/ 2>/dev/null
+    elif [ -d "$old" ] && [ -d "$new" ] && [ "$old" != "$new" ] &&
+         (is_subpath "$old" "$SNAP_USER_DATA" || is_subpath "$old" "$SNAP_USER_COMMON"); then
+      mv -vn "$old"/* "$new"/ 2>/dev/null
+    fi
+  done
+fi
+
+# If detect wayland server socket, then set environment so applications prefer
+# wayland, and setup compat symlink (until we use user mounts. Remember,
+# XDG_RUNTIME_DIR is /run/user/<uid>/snap.$SNAP so look in the parent directory
+# for the socket. For details:
+# https://forum.snapcraft.io/t/wayland-dconf-and-xdg-runtime-dir/186/10
+# Applications that don't support wayland natively may define DISABLE_WAYLAND
+# (to any non-empty value) to skip that logic entirely.
+SNAP_DESKTOP_WAYLAND_AVAILABLE=false
+if [[ -n "$XDG_RUNTIME_DIR" && -z "$DISABLE_WAYLAND" ]]; then
+    wdisplay="wayland-0"
+    if [ -n "$WAYLAND_DISPLAY" ]; then
+        # Reject values containing '/' to prevent path traversal in the symlink paths below.
+        # A legitimate WAYLAND_DISPLAY is always a plain socket name (e.g. "wayland-0").
+        if [[ "$WAYLAND_DISPLAY" != */* ]]; then
+            wdisplay="$WAYLAND_DISPLAY"
+        fi
+    fi
+    wayland_sockpath="$XDG_RUNTIME_DIR/../$wdisplay"
+    wayland_snappath="$XDG_RUNTIME_DIR/$wdisplay"
+    if [ -S "$wayland_sockpath" ]; then
+        # if running under wayland, use it
+        #export WAYLAND_DEBUG=1
+        SNAP_DESKTOP_WAYLAND_AVAILABLE=true
+        # create the compat symlink for now
+        if [ ! -e "$wayland_snappath" ]; then
+            ln -s "$wayland_sockpath" "$wayland_snappath"
+        fi
+    fi
+fi
+
+# Make PulseAudio socket available inside the snap-specific $XDG_RUNTIME_DIR
+if [ -n "$XDG_RUNTIME_DIR" ]; then
+    pulsenative="pulse/native"
+    pulseaudio_sockpath="$XDG_RUNTIME_DIR/../$pulsenative"
+    if [ -S "$pulseaudio_sockpath" ]; then
+        export PULSE_SERVER="unix:${pulseaudio_sockpath}"
+    fi
+fi
+
+# GI repository
+[ -n "$SNAP_DESKTOP_RUNTIME" ] && prepend_dir GI_TYPELIB_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/girepository-1.0"
+[ -n "$SNAP_DESKTOP_RUNTIME" ] && prepend_dir GI_TYPELIB_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/girepository-1.0"
+prepend_dir GI_TYPELIB_PATH "$SNAP/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/girepository-1.0"
+prepend_dir GI_TYPELIB_PATH "$SNAP/usr/lib/girepository-1.0"
+prepend_dir GI_TYPELIB_PATH "$SNAP/usr/lib/gjs/girepository-1.0"
+
+# Keep an array of data dirs, for looping through them
+IFS=':' read -r -a data_dirs_array <<< "$XDG_DATA_DIRS"
+
+# Font Config and themes
+export FONTCONFIG_PATH="$SNAP_DESKTOP_RUNTIME/etc/fonts"
+export FONTCONFIG_FILE="$SNAP_DESKTOP_RUNTIME/etc/fonts/fonts.conf"
+
+function make_user_fontconfig {
+  echo "<fontconfig>"
+  if [ -d "$REALHOME/.local/share/fonts" ]; then
+    echo "  <dir>$REALHOME/.local/share/fonts</dir>"
+  fi
+  if [ -d "$REALHOME/.fonts" ]; then
+    echo "  <dir>$REALHOME/.fonts</dir>"
+  fi
+  for ((i = 0; i < ${#data_dirs_array[@]}; i++)); do
+    if [ -d "${data_dirs_array[$i]}/fonts" ]; then
+      echo "  <dir>${data_dirs_array[$i]}/fonts</dir>"
+    fi
+  done
+  echo '  <include ignore_missing="yes">conf.d</include>'
+  # We need to include this default cachedir first so that caching
+  # works: without it, fontconfig will try to write to the real user home
+  # cachedir and be blocked by AppArmor.
+  echo '  <cachedir prefix="xdg">fontconfig</cachedir>'
+  if [ -d "$REALHOME/.cache/fontconfig" ]; then
+    echo "  <cachedir>$REALHOME/.cache/fontconfig</cachedir>"
+  fi
+  echo "</fontconfig>"
+}
+
+if [ "$SNAP_DESKTOP_COMPONENTS_NEED_UPDATE" = "true" ]; then
+  rm -rf "$XDG_DATA_HOME"/{fontconfig,fonts,fonts-*,themes,.themes}
+
+  # This fontconfig fragment is installed in a location that is
+  # included by the system fontconfig configuration: namely the
+  # etc/fonts/conf.d/50-user.conf file.
+  mkdir -p "$XDG_CONFIG_HOME/fontconfig"
+  make_user_fontconfig > "$XDG_CONFIG_HOME/fontconfig/fonts.conf"
+
+  # the themes symlink are needed for GTK 3.18 when the prefix isn't changed
+  # GTK 3.20 looks into XDG_DATA_DIR which has connected themes.
+  ln -sf "$SNAP/data-dir/themes" "$XDG_DATA_HOME"
+  ln -sfn "$SNAP/data-dir/themes" "$SNAP_USER_DATA/.themes"
+fi
+
+# Build mime.cache
+# needed for gtk and qt icon
+if [ "$SNAP_DESKTOP_COMPONENTS_NEED_UPDATE" = "true" ]; then
+  rm -rf "$XDG_DATA_HOME/mime"
+  if [ ! -f "$SNAP_DESKTOP_RUNTIME/usr/share/mime/mime.cache" ]; then
+    if command -v update-mime-database >/dev/null; then
+      cp --preserve=timestamps -dR "$SNAP_DESKTOP_RUNTIME/usr/share/mime" "$XDG_DATA_HOME"
+      update-mime-database "$XDG_DATA_HOME/mime"
+    fi
+  fi
+fi
+
+# Gio modules and cache (including gsettings module)
+export GIO_MODULE_DIR="$XDG_CACHE_HOME/gio-modules"
+if [ "$SNAP_DESKTOP_COMPONENTS_NEED_UPDATE" = "true" ]; then
+  if [ -f "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/glib-2.0/gio-querymodules" ]; then
+    rm -rf "$GIO_MODULE_DIR"
+    mkdir -p "$GIO_MODULE_DIR"
+    ln -sf "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gio/modules/"*.so "$GIO_MODULE_DIR"
+    ln -sf "$SNAP/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gio/modules/"*.so "$GIO_MODULE_DIR"
+    "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/glib-2.0/gio-querymodules" "$GIO_MODULE_DIR"
+  fi
+fi
+
+# Setup compiled gsettings schema
+GS_SCHEMA_DIR="$XDG_DATA_HOME/glib-2.0/schemas"
+function compile_schemas {
+  if [ -f "$1" ]; then
+    rm -rf "$GS_SCHEMA_DIR"
+    mkdir -p "$GS_SCHEMA_DIR"
+    for ((i = 0; i < ${#data_dirs_array[@]}; i++)); do
+      schema_dir="${data_dirs_array[$i]}/glib-2.0/schemas"
+      if [ -f "$schema_dir/gschemas.compiled" ]; then
+        # This directory already has compiled schemas
+        continue
+      fi
+      if [ -n "$(ls -A "$schema_dir"/*.xml 2>/dev/null)" ]; then
+        ln -s "$schema_dir"/*.xml "$GS_SCHEMA_DIR"
+      fi
+      if [ -n "$(ls -A "$schema_dir"/*.override 2>/dev/null)" ]; then
+        ln -s "$schema_dir"/*.override "$GS_SCHEMA_DIR"
+      fi
+    done
+    # Only compile schemas if we copied anything
+    if [ -n "$(ls -A "$GS_SCHEMA_DIR"/*.xml "$GS_SCHEMA_DIR"/*.override 2>/dev/null)" ]; then
+      "$1" "$GS_SCHEMA_DIR"
+    fi
+  fi
+}
+if [ "$SNAP_DESKTOP_COMPONENTS_NEED_UPDATE" = "true" ]; then
+  compile_schemas "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/glib-2.0/glib-compile-schemas"
+fi
+
+# Enable gsettings user changes
+# symlink the dconf file if home plug is connected for read
+DCONF_DEST_USER_DIR="$SNAP_USER_DATA/.config/dconf"
+if [ ! -f "$DCONF_DEST_USER_DIR/user" ]; then
+  if [ -f "$REALHOME/.config/dconf/user" ]; then
+    mkdir -p "$DCONF_DEST_USER_DIR"
+    ln -s "$REALHOME/.config/dconf/user" "$DCONF_DEST_USER_DIR"
+  fi
+fi
+
+# Testability support
+append_dir LD_LIBRARY_PATH "$SNAP/testability"
+append_dir LD_LIBRARY_PATH "$SNAP/testability/$SNAP_DESKTOP_ARCH_TRIPLET"
+append_dir LD_LIBRARY_PATH "$SNAP/testability/$SNAP_DESKTOP_ARCH_TRIPLET/mesa"
+
+# Gdk-pixbuf loaders
+export GDK_PIXBUF_MODULE_FILE=$XDG_CACHE_HOME/gdk-pixbuf-loaders.cache
+export GDK_PIXBUF_MODULEDIR=$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gdk-pixbuf-2.0/2.10.0/loaders
+if [ "$SNAP_DESKTOP_COMPONENTS_NEED_UPDATE" = "true" ]; then
+  rm -f "$GDK_PIXBUF_MODULE_FILE"
+  if [ -f "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gdk-pixbuf-2.0/gdk-pixbuf-query-loaders" ]; then
+    "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gdk-pixbuf-2.0/gdk-pixbuf-query-loaders" > "$GDK_PIXBUF_MODULE_FILE"
+  fi
+fi
+
+# Icon themes cache
+if [ "$SNAP_DESKTOP_COMPONENTS_NEED_UPDATE" = "true" ]; then
+  rm -rf "$XDG_DATA_HOME/icons"
+  mkdir -p "$XDG_DATA_HOME/icons"
+  for ((i = 0; i < ${#data_dirs_array[@]}; i++)); do
+    for theme in "${data_dirs_array[$i]}/icons/"*; do
+      if [ -f "$theme/index.theme" ] && [ ! -f "$theme/icon-theme.cache" ]; then
+        theme_dir="$XDG_DATA_HOME/icons/$(basename "$theme")"
+        if [ ! -d "$theme_dir" ]; then
+          mkdir -p "$theme_dir"
+          ln -s "$theme"/* "$theme_dir"
+          if [ -f "$SNAP_DESKTOP_RUNTIME/usr/sbin/update-icon-caches" ]; then
+            "$SNAP_DESKTOP_RUNTIME/usr/sbin/update-icon-caches" "$theme_dir"
+          elif [ -f "$SNAP_DESKTOP_RUNTIME/usr/sbin/update-icon-cache.gtk2" ]; then
+            "$SNAP_DESKTOP_RUNTIME/usr/sbin/update-icon-cache.gtk2" "$theme_dir"
+          fi
+        fi
+      fi
+    done
+  done
+fi
+
+# GTK theme and behavior modifier
+# Those can impact the theme engine used by Qt as well
+gtk_configs=(gtk-3.0/settings.ini gtk-3.0/bookmarks gtk-2.0/gtkfilechooser.ini)
+for f in "${gtk_configs[@]}"; do
+  dest="$XDG_CONFIG_HOME/$f"
+  if [ ! -L "$dest" ]; then
+    mkdir -p "$(dirname "$dest")"
+    ln -s "$REALHOME/.config/$f" "$dest"
+  fi
+done
+
+# create symbolic link to ibus socket path for ibus to look up its socket files
+# (see comments #3 and #6 on https://launchpad.net/bugs/1580463)
+IBUS_CONFIG_PATH="$XDG_CONFIG_HOME/ibus"
+mkdir -p "$IBUS_CONFIG_PATH"
+[ -d "$IBUS_CONFIG_PATH/bus" ] && rm -rf "$IBUS_CONFIG_PATH/bus"
+ln -sfn "$REALHOME/.config/ibus/bus" "$IBUS_CONFIG_PATH"
+
+export SNAP_DESKTOP_WAYLAND_AVAILABLE
+
+exec "$@"

electron/node_modules/app-builder-lib/templates/snap/desktop-gnome-specific.sh

@@ -0,0 +1,31 @@
+#!/bin/bash -e
+
+##############################
+# GTK launcher specific part #
+##############################
+
+if [ "$SNAP_DESKTOP_WAYLAND_AVAILABLE" = "true" ]; then
+  export GDK_BACKEND="wayland"
+  export CLUTTER_BACKEND="wayland"
+  # Does not hurt to specify this as well, just in case
+  export QT_QPA_PLATFORM=wayland-egl
+fi
+
+export GTK_PATH="$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gtk-3.0"
+
+# ibus and fcitx integration
+GTK_IM_MODULE_DIR=$XDG_CACHE_HOME/immodules
+export GTK_IM_MODULE_FILE=$GTK_IM_MODULE_DIR/immodules.cache
+if [ "$SNAP_DESKTOP_COMPONENTS_NEED_UPDATE" = "true" ]; then
+  rm -rf "$GTK_IM_MODULE_DIR"
+  mkdir -p "$GTK_IM_MODULE_DIR"
+  if [ -x "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/libgtk-3-0/gtk-query-immodules-3.0" ]; then
+    ln -sf "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gtk-3.0/3.0.0/immodules"/*.so "$GTK_IM_MODULE_DIR"
+    "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/libgtk-3-0/gtk-query-immodules-3.0" > "$GTK_IM_MODULE_FILE"
+  elif [ -x "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/libgtk2.0-0/gtk-query-immodules-2.0" ]; then
+    ln -sf "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/gtk-2.0/2.10.0/immodules"/*.so "$GTK_IM_MODULE_DIR"
+    "$SNAP_DESKTOP_RUNTIME/usr/lib/$SNAP_DESKTOP_ARCH_TRIPLET/libgtk2.0-0/gtk-query-immodules-2.0" > "$GTK_IM_MODULE_FILE"
+  fi
+fi
+
+exec "$@"

electron/node_modules/app-builder-lib/templates/snap/desktop-init.sh

@@ -0,0 +1,52 @@
+#!/bin/bash -e
+
+#################
+# Launcher init #
+#################
+
+SNAP_DESKTOP_COMPONENTS_NEED_UPDATE="true"
+
+# shellcheck source=/dev/null
+. "$SNAP_USER_DATA/.last_revision" 2>/dev/null || true
+if [ "$SNAP_DESKTOP_LAST_REVISION" = "$SNAP_REVISION" ]; then
+  SNAP_DESKTOP_COMPONENTS_NEED_UPDATE="false"
+else
+  echo "SNAP_DESKTOP_LAST_REVISION=$SNAP_REVISION" > "$SNAP_USER_DATA/.last_revision"
+fi
+
+# Set $REALHOME to the users real home directory
+REALHOME="$(getent passwd $UID | cut -d ':' -f 6)"
+
+# If the user has modified their user-dirs settings, force an update
+if [[ -f "$XDG_CONFIG_HOME/user-dirs.dirs.md5sum" && -f "$XDG_CONFIG_HOME/user-dirs.locale.md5sum" ]]; then
+  if [[ "$(md5sum < "$REALHOME/.config/user-dirs.dirs")" != "$(cat "$XDG_CONFIG_HOME/user-dirs.dirs.md5sum")" ||
+        "$(md5sum < "$REALHOME/.config/user-dirs.locale")" != "$(cat "$XDG_CONFIG_HOME/user-dirs.locale.md5sum")" ]]; then
+    SNAP_DESKTOP_COMPONENTS_NEED_UPDATE="true"
+  fi
+fi
+
+if [ "$SNAP_ARCH" == "amd64" ]; then
+  ARCH="x86_64-linux-gnu"
+elif [ "$SNAP_ARCH" == "armhf" ]; then
+  ARCH="arm-linux-gnueabihf"
+elif [ "$SNAP_ARCH" == "arm64" ]; then
+  ARCH="aarch64-linux-gnu"
+elif [ "$SNAP_ARCH" == "ppc64el" ]; then
+  ARCH="powerpc64le-linux-gnu"
+else
+  ARCH="$SNAP_ARCH-linux-gnu"
+fi
+
+SNAP_DESKTOP_ARCH_TRIPLET="$ARCH"
+
+if [ -f "$SNAP/lib/bindtextdomain.so" ]; then
+  # Use :+ to avoid a leading ':' when LD_PRELOAD is empty.
+  # A bare leading ':' makes the dynamic linker search CWD before snap paths.
+  export LD_PRELOAD="${LD_PRELOAD:+$LD_PRELOAD:}$SNAP/lib/bindtextdomain.so"
+fi
+
+export REALHOME
+export SNAP_DESKTOP_COMPONENTS_NEED_UPDATE
+export SNAP_DESKTOP_ARCH_TRIPLET
+
+exec "$@"

electron/node_modules/app-builder-lib/templates/snap/snapcraft.yaml

@@ -1,4 +1,4 @@
-base: core18
+base: core20
 grade: stable
 confinement: strict
 parts: