From df57846dfbb6612d54a20778f08784b40b78d02c Mon Sep 17 00:00:00 2001
From: Chad Smith <chad.smith@canonical.com>
Date: Tue, 28 Mar 2023 18:33:59 -0600
Subject: [PATCH 1/2] cloud-init: preserve ephemeral cloud-init logs in target
 to aid in debug

---
 subiquity/server/controllers/shutdown.py |  12 +
 system_setup/ubuntu-wsl-setup            | 373 -----------------------
 2 files changed, 12 insertions(+), 373 deletions(-)
 delete mode 100755 system_setup/ubuntu-wsl-setup

diff --git a/subiquity/server/controllers/shutdown.py b/subiquity/server/controllers/shutdown.py
index cd2c6396..c3360b68 100644
--- a/subiquity/server/controllers/shutdown.py
+++ b/subiquity/server/controllers/shutdown.py
@@ -100,6 +100,18 @@ class ShutdownController(SubiquityController):
         if self.opts.dry_run:
             os.makedirs(target_logs, exist_ok=True)
         else:
+            # Preserve ephemeral boot cloud-init logs if applicable
+            cloudinit_logs = [
+               cloudinit_log
+               for cloudinit_log in (
+                    "/var/log/cloud-init.log",
+                    "/var/log/cloud-init-output.log"
+               )
+               if os.path.exists(cloudinit_log)
+            ]
+            if cloudinit_logs:
+                await arun_command(
+                    ['cp', '-a'] + cloudinit_logs + ['/var/log/installer'])
             await arun_command(
                 ['cp', '-aT', '/var/log/installer', target_logs])
             # Close the permissions from group writes on the target.
diff --git a/system_setup/ubuntu-wsl-setup b/system_setup/ubuntu-wsl-setup
deleted file mode 100755
index 6fef384b..00000000
--- a/system_setup/ubuntu-wsl-setup
+++ /dev/null
@@ -1,373 +0,0 @@
-#!/bin/bash
-
-#################
-# Launcher init #
-#################
-
-START=$(date +%s.%N)
-
-function exit_if_not_wsl2() {
-    # WSLInterop ensures we are under WSL (either 1 or 2).
-    # config.gz ensures we have a kernel. WSL 1 does not have one.
-    # grep'ing /proc/version for 'WSL2' would work, but users can change that
-    # when compiling their own kernel.
-    if ! [[ -f "/proc/sys/fs/binfmt_misc/WSLInterop" && -f "/proc/config.gz" ]]; then
-        echo "WSL 2 not detected. Exiting."
-        exit 125
-    fi
-}
-
-# ensure_dir_exists calls `mkdir -p` if the given path is not a directory.
-# This speeds up execution time by avoiding unnecessary calls to mkdir.
-#
-# Usage: ensure_dir_exists <path> [<mkdir-options>]...
-#
-function ensure_dir_exists() {
-  [ -d "$1" ] ||  mkdir -p "$@"
-}
-
-declare -A PIDS
-function async_exec() {
-  "$@" &
-  PIDS[$!]=$*
-}
-function wait_for_async_execs() {
-  for pid in "${!PIDS[@]}"
-  do
-    wait "$pid" && continue || echo "ERROR: ${PIDS[$pid]} exited abnormally with status $?"
-  done
-}
-
-# Proceed only if in WSL 2:
-exit_if_not_wsl2
-
-# shellcheck source=/dev/null
-source "$SNAP_USER_DATA/.last_revision" 2>/dev/null || true
-if [ "$SNAP_DESKTOP_LAST_REVISION" = "$SNAP_REVISION" ]; then
-  needs_update=false
-else
-  needs_update=true
-fi
-
-# Set $REALHOME to the users real home directory
-REALHOME=$(getent passwd $UID | cut -d ':' -f 6)
-
-# Set config folder to local path
-export XDG_CONFIG_HOME="$SNAP_USER_DATA/.config"
-ensure_dir_exists "$XDG_CONFIG_HOME"
-chmod 700 "$XDG_CONFIG_HOME"
-
-# If the user has modified their user-dirs settings, force an update
-if [[ -f "$REALHOME/.config/user-dirs.dirs" ]]; then
-  if [[ -f "$XDG_CONFIG_HOME/user-dirs.dirs.md5sum" ]]; then
-    if [[ "$(md5sum < "$REALHOME/.config/user-dirs.dirs")" != "$(cat "$XDG_CONFIG_HOME/user-dirs.dirs.md5sum")" ||
-          ( -f "$XDG_CONFIG_HOME/user-dirs.locale.md5sum" &&
-            "$(md5sum < "$REALHOME/.config/user-dirs.locale")" != "$(cat "$XDG_CONFIG_HOME/user-dirs.locale.md5sum")" ) ]]; then
-      needs_update=true
-    fi
-  else
-    # shellcheck disable=SC2034
-    needs_update=true
-  fi
-fi
-
-if [ "$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
-
-export SNAP_LAUNCHER_ARCH_TRIPLET="$ARCH"
-
-# Don't LD_PRELOAD bindtextdomain for classic snaps
-if ! grep -qs "^\s*confinement:\s*classic\s*" "$SNAP/meta/snap.yaml"; then
-  if [ -f "$SNAP/gnome-platform/lib/$ARCH/bindtextdomain.so" ]; then
-    export LD_PRELOAD="$LD_PRELOAD:$SNAP/gnome-platform/\$LIB/bindtextdomain.so"
-  elif [ -f "$SNAP/lib/$ARCH/bindtextdomain.so" ]; then
-    export LD_PRELOAD="$LD_PRELOAD:$SNAP/\$LIB/bindtextdomain.so"
-  fi
-fi
-
-
-###############################################
-# Launcher common exports for any desktop app #
-###############################################
-
-# Note: We avoid using `eval` because we don't want to expand variable names
-#       in paths. For example: LD_LIBRARY_PATH paths might contain `$LIB`.
-function prepend_dir() {
-  local -n var="$1"
-  local dir="$2"
-  # We can't check if the dir exists when the dir contains variables
-  if [[ "$dir" == *"\$"*  || -d "$dir" ]]; then
-    export "${!var}=${dir}${var:+:$var}"
-  fi
-}
-
-function append_dir() {
-  local -n var="$1"
-  local dir="$2"
-  # We can't check if the dir exists when the dir contains variables
-  if [[ "$dir" == *"\$"*  || -d "$dir" ]]; then
-    export "${!var}=${var:+$var:}${dir}"
-  fi
-}
-
-function can_open_file() {
-  [ -f "$1" ] && [ -r "$1" ]
-}
-
-function update_xdg_dirs_values() {
-  local save_initial_values=false
-  local XDG_DIRS="DOCUMENTS DESKTOP DOWNLOAD MUSIC PICTURES VIDEOS PUBLICSHARE TEMPLATES"
-  unset XDG_SPECIAL_DIRS_PATHS
-
-  if [ -f "${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+=("$var")
-      XDG_SPECIAL_DIRS_INITIAL_PATHS+=("$value")
-    fi
-
-    XDG_SPECIAL_DIRS_PATHS+=("$value")
-  done
-}
-
-function is_subpath() {
-  dir="$(realpath "$1")"
-  parent="$(realpath "$2")"
-  [ "${dir##$parent/}" != "$dir" ] && return 0 || return 1
-}
-
-append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/lib/$ARCH"
-append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/$ARCH"
-append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib"
-append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/lib"
-prepend_dir PATH "$SNAP_DESKTOP_RUNTIME/usr/bin"
-
-# XDG Config
-prepend_dir XDG_CONFIG_DIRS "$SNAP_DESKTOP_RUNTIME/etc/xdg"
-prepend_dir XDG_CONFIG_DIRS "$SNAP/etc/xdg"
-
-# Define snaps' own data dir
-prepend_dir XDG_DATA_DIRS "$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="$SNAP_USER_DATA/.local/share"
-ensure_dir_exists "$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" "$SNAP_USER_COMMON/"
-fi
-ensure_dir_exists "$XDG_CACHE_HOME"
-
-# Create $XDG_RUNTIME_DIR if not exists (to be removed when LP: #1656340 is fixed)
-# shellcheck disable=SC2174
-ensure_dir_exists "$XDG_RUNTIME_DIR" -m 700
-
-# 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 "$REALHOME/.config/user-dirs.dirs"; then
-  # shellcheck disable=SC2154
-  if [ "$needs_update" = true ] || [ "$needs_xdg_reload" = true ]; then
-    sed "/^#/!s#\$HOME#${REALHOME}#g" "$REALHOME/.config/user-dirs.dirs" > "$XDG_CONFIG_HOME/user-dirs.dirs"
-    md5sum < "$REALHOME/.config/user-dirs.dirs" > "$XDG_CONFIG_HOME/user-dirs.dirs.md5sum"
-    # It's possible user-dirs.dirs exists when user-dirs.locale doesn't. This
-    # simply means the user opted to never ask to translate their user dirs
-    if can_open_file "$REALHOME/.config/user-dirs.locale"; then
-      cp -a "$REALHOME/.config/user-dirs.locale" "$XDG_CONFIG_HOME"
-      md5sum < "$REALHOME/.config/user-dirs.locale" > "$XDG_CONFIG_HOME/user-dirs.locale.md5sum"
-    elif [ -f "$XDG_CONFIG_HOME/user-dirs.locale.md5sum" ]; then
-      rm "$XDG_CONFIG_HOME/user-dirs.locale.md5sum"
-    fi
-    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="$HOME" 2>/dev/null)"
-    if [[ -n "$b" && "$b" != "." && -e "$REALHOME/$b" ]]; then
-      [ -d "$HOME/$b" ] && rmdir "$HOME/$b" 2> /dev/null
-      [ ! -e "$HOME/$b" ] && ln -s "$REALHOME/$b" "$HOME/$b"
-    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 "$old" 2>/dev/null)" != "$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
-
-# 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[$i]}/fonts</dir>"
-    fi
-  done
-  # We need to include a user-writable cachedir first to support
-  # caching of per-user fonts.
-  echo '  <cachedir prefix="xdg">fontconfig</cachedir>'
-  echo "  <cachedir>$SNAP_COMMON/fontconfig</cachedir>"
-  echo "</fontconfig>"
-}
-
-if [ "$needs_update" = true ]; then
-  rm -rf "$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.
-  ensure_dir_exists "$XDG_CONFIG_HOME/fontconfig"
-  async_exec make_user_fontconfig > "$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_DIRS which has connected themes.
-  if [ -d "$SNAP/data-dir/themes" ]; then
-    ln -sf "$SNAP/data-dir/themes" "$XDG_DATA_HOME"
-    ln -sfn "$SNAP/data-dir/themes" "$SNAP_USER_DATA/.themes"
-  elif [ -d "$SNAP_DESKTOP_RUNTIME/usr/share/themes" ]; then
-    ln -sf "$SNAP_DESKTOP_RUNTIME/usr/share/themes" "$XDG_DATA_HOME"
-    ln -sfn "$SNAP_DESKTOP_RUNTIME/usr/share/themes" "$SNAP_USER_DATA/.themes"
-  fi
-fi
-
-# Testability support
-append_dir LD_LIBRARY_PATH "$SNAP/testability"
-append_dir LD_LIBRARY_PATH "$SNAP/testability/$ARCH"
-append_dir LD_LIBRARY_PATH "$SNAP/testability/$ARCH/mesa"
-
-
-[ "$needs_update" = true ] && echo "SNAP_DESKTOP_LAST_REVISION=$SNAP_REVISION" > "$SNAP_USER_DATA/.last_revision"
-
-wait_for_async_execs
-
-if [ -n "$SNAP_DESKTOP_DEBUG" ]; then
-  echo "desktop-launch elapsed time: $(date +%s.%N --date="$START seconds ago")"
-  echo "Now running: exec $*"
-fi
-
-PATH="${SNAP}/usr/sbin:${SNAP}/usr/bin:${SNAP}/sbin:${SNAP}/bin"
-PATH="${PATH}:${SNAP_CORE_DIR}/usr/sbin:${SNAP_CORE_DIR}/usr/bin:${SNAP_CORE_DIR}/sbin:${SNAP_CORE_DIR}/bin"
-
-# configure python environment
-export PYTHONIOENCODING=utf-8
-PYTHONPATH=$SNAP/lib/python3.10/site-packages
-PYTHONPATH=$SNAP/usr/lib/python3/site-packages:$PYTHONPATH
-PYTHONPATH=$SNAP/usr/lib/python3/dist-packages:$PYTHONPATH
-export PYTHONPATH
-export PYTHON=$SNAP/usr/bin/python3.10
-export SNAP_PYTHON=$PYTHON
-# ensure curtin points at PYTHON
-export PY3OR2_PYTHON=$PYTHON
-# base directory for subiquity to locate resources
-export SUBIQUITY_ROOT=$SNAP
-
-BIN="$PYTHON -m system_setup.cmd.server"
-args=""
-for arg in $@; do
-  if [ ${arg} = "--server-only" ]; then
-    # Just eat that argument. It's useful for the GUI context only,
-    # since here the server only startup option is the default.
-    continue
-  fi
-  if [ ${arg} = "-t" -o ${arg} = "--text" ]; then
-    BIN="$PYTHON -m system_setup.cmd.tui"
-    continue
-  fi
-  args="$args $arg"
-done
-
-exec $BIN $args

From 5711b17b1322d34b25615bcd09ee889755a98ba7 Mon Sep 17 00:00:00 2001
From: Dan Bungert <daniel.bungert@canonical.com>
Date: Wed, 29 Mar 2023 16:02:53 -0600
Subject: [PATCH 2/2] system-setup: restore accidentally deleted file

---
 system_setup/ubuntu-wsl-setup | 373 ++++++++++++++++++++++++++++++++++
 1 file changed, 373 insertions(+)
 create mode 100755 system_setup/ubuntu-wsl-setup

diff --git a/system_setup/ubuntu-wsl-setup b/system_setup/ubuntu-wsl-setup
new file mode 100755
index 00000000..6fef384b
--- /dev/null
+++ b/system_setup/ubuntu-wsl-setup
@@ -0,0 +1,373 @@
+#!/bin/bash
+
+#################
+# Launcher init #
+#################
+
+START=$(date +%s.%N)
+
+function exit_if_not_wsl2() {
+    # WSLInterop ensures we are under WSL (either 1 or 2).
+    # config.gz ensures we have a kernel. WSL 1 does not have one.
+    # grep'ing /proc/version for 'WSL2' would work, but users can change that
+    # when compiling their own kernel.
+    if ! [[ -f "/proc/sys/fs/binfmt_misc/WSLInterop" && -f "/proc/config.gz" ]]; then
+        echo "WSL 2 not detected. Exiting."
+        exit 125
+    fi
+}
+
+# ensure_dir_exists calls `mkdir -p` if the given path is not a directory.
+# This speeds up execution time by avoiding unnecessary calls to mkdir.
+#
+# Usage: ensure_dir_exists <path> [<mkdir-options>]...
+#
+function ensure_dir_exists() {
+  [ -d "$1" ] ||  mkdir -p "$@"
+}
+
+declare -A PIDS
+function async_exec() {
+  "$@" &
+  PIDS[$!]=$*
+}
+function wait_for_async_execs() {
+  for pid in "${!PIDS[@]}"
+  do
+    wait "$pid" && continue || echo "ERROR: ${PIDS[$pid]} exited abnormally with status $?"
+  done
+}
+
+# Proceed only if in WSL 2:
+exit_if_not_wsl2
+
+# shellcheck source=/dev/null
+source "$SNAP_USER_DATA/.last_revision" 2>/dev/null || true
+if [ "$SNAP_DESKTOP_LAST_REVISION" = "$SNAP_REVISION" ]; then
+  needs_update=false
+else
+  needs_update=true
+fi
+
+# Set $REALHOME to the users real home directory
+REALHOME=$(getent passwd $UID | cut -d ':' -f 6)
+
+# Set config folder to local path
+export XDG_CONFIG_HOME="$SNAP_USER_DATA/.config"
+ensure_dir_exists "$XDG_CONFIG_HOME"
+chmod 700 "$XDG_CONFIG_HOME"
+
+# If the user has modified their user-dirs settings, force an update
+if [[ -f "$REALHOME/.config/user-dirs.dirs" ]]; then
+  if [[ -f "$XDG_CONFIG_HOME/user-dirs.dirs.md5sum" ]]; then
+    if [[ "$(md5sum < "$REALHOME/.config/user-dirs.dirs")" != "$(cat "$XDG_CONFIG_HOME/user-dirs.dirs.md5sum")" ||
+          ( -f "$XDG_CONFIG_HOME/user-dirs.locale.md5sum" &&
+            "$(md5sum < "$REALHOME/.config/user-dirs.locale")" != "$(cat "$XDG_CONFIG_HOME/user-dirs.locale.md5sum")" ) ]]; then
+      needs_update=true
+    fi
+  else
+    # shellcheck disable=SC2034
+    needs_update=true
+  fi
+fi
+
+if [ "$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
+
+export SNAP_LAUNCHER_ARCH_TRIPLET="$ARCH"
+
+# Don't LD_PRELOAD bindtextdomain for classic snaps
+if ! grep -qs "^\s*confinement:\s*classic\s*" "$SNAP/meta/snap.yaml"; then
+  if [ -f "$SNAP/gnome-platform/lib/$ARCH/bindtextdomain.so" ]; then
+    export LD_PRELOAD="$LD_PRELOAD:$SNAP/gnome-platform/\$LIB/bindtextdomain.so"
+  elif [ -f "$SNAP/lib/$ARCH/bindtextdomain.so" ]; then
+    export LD_PRELOAD="$LD_PRELOAD:$SNAP/\$LIB/bindtextdomain.so"
+  fi
+fi
+
+
+###############################################
+# Launcher common exports for any desktop app #
+###############################################
+
+# Note: We avoid using `eval` because we don't want to expand variable names
+#       in paths. For example: LD_LIBRARY_PATH paths might contain `$LIB`.
+function prepend_dir() {
+  local -n var="$1"
+  local dir="$2"
+  # We can't check if the dir exists when the dir contains variables
+  if [[ "$dir" == *"\$"*  || -d "$dir" ]]; then
+    export "${!var}=${dir}${var:+:$var}"
+  fi
+}
+
+function append_dir() {
+  local -n var="$1"
+  local dir="$2"
+  # We can't check if the dir exists when the dir contains variables
+  if [[ "$dir" == *"\$"*  || -d "$dir" ]]; then
+    export "${!var}=${var:+$var:}${dir}"
+  fi
+}
+
+function can_open_file() {
+  [ -f "$1" ] && [ -r "$1" ]
+}
+
+function update_xdg_dirs_values() {
+  local save_initial_values=false
+  local XDG_DIRS="DOCUMENTS DESKTOP DOWNLOAD MUSIC PICTURES VIDEOS PUBLICSHARE TEMPLATES"
+  unset XDG_SPECIAL_DIRS_PATHS
+
+  if [ -f "${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+=("$var")
+      XDG_SPECIAL_DIRS_INITIAL_PATHS+=("$value")
+    fi
+
+    XDG_SPECIAL_DIRS_PATHS+=("$value")
+  done
+}
+
+function is_subpath() {
+  dir="$(realpath "$1")"
+  parent="$(realpath "$2")"
+  [ "${dir##$parent/}" != "$dir" ] && return 0 || return 1
+}
+
+append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/lib/$ARCH"
+append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib/$ARCH"
+append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/usr/lib"
+append_dir LD_LIBRARY_PATH "$SNAP_DESKTOP_RUNTIME/lib"
+prepend_dir PATH "$SNAP_DESKTOP_RUNTIME/usr/bin"
+
+# XDG Config
+prepend_dir XDG_CONFIG_DIRS "$SNAP_DESKTOP_RUNTIME/etc/xdg"
+prepend_dir XDG_CONFIG_DIRS "$SNAP/etc/xdg"
+
+# Define snaps' own data dir
+prepend_dir XDG_DATA_DIRS "$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="$SNAP_USER_DATA/.local/share"
+ensure_dir_exists "$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" "$SNAP_USER_COMMON/"
+fi
+ensure_dir_exists "$XDG_CACHE_HOME"
+
+# Create $XDG_RUNTIME_DIR if not exists (to be removed when LP: #1656340 is fixed)
+# shellcheck disable=SC2174
+ensure_dir_exists "$XDG_RUNTIME_DIR" -m 700
+
+# 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 "$REALHOME/.config/user-dirs.dirs"; then
+  # shellcheck disable=SC2154
+  if [ "$needs_update" = true ] || [ "$needs_xdg_reload" = true ]; then
+    sed "/^#/!s#\$HOME#${REALHOME}#g" "$REALHOME/.config/user-dirs.dirs" > "$XDG_CONFIG_HOME/user-dirs.dirs"
+    md5sum < "$REALHOME/.config/user-dirs.dirs" > "$XDG_CONFIG_HOME/user-dirs.dirs.md5sum"
+    # It's possible user-dirs.dirs exists when user-dirs.locale doesn't. This
+    # simply means the user opted to never ask to translate their user dirs
+    if can_open_file "$REALHOME/.config/user-dirs.locale"; then
+      cp -a "$REALHOME/.config/user-dirs.locale" "$XDG_CONFIG_HOME"
+      md5sum < "$REALHOME/.config/user-dirs.locale" > "$XDG_CONFIG_HOME/user-dirs.locale.md5sum"
+    elif [ -f "$XDG_CONFIG_HOME/user-dirs.locale.md5sum" ]; then
+      rm "$XDG_CONFIG_HOME/user-dirs.locale.md5sum"
+    fi
+    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="$HOME" 2>/dev/null)"
+    if [[ -n "$b" && "$b" != "." && -e "$REALHOME/$b" ]]; then
+      [ -d "$HOME/$b" ] && rmdir "$HOME/$b" 2> /dev/null
+      [ ! -e "$HOME/$b" ] && ln -s "$REALHOME/$b" "$HOME/$b"
+    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 "$old" 2>/dev/null)" != "$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
+
+# 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[$i]}/fonts</dir>"
+    fi
+  done
+  # We need to include a user-writable cachedir first to support
+  # caching of per-user fonts.
+  echo '  <cachedir prefix="xdg">fontconfig</cachedir>'
+  echo "  <cachedir>$SNAP_COMMON/fontconfig</cachedir>"
+  echo "</fontconfig>"
+}
+
+if [ "$needs_update" = true ]; then
+  rm -rf "$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.
+  ensure_dir_exists "$XDG_CONFIG_HOME/fontconfig"
+  async_exec make_user_fontconfig > "$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_DIRS which has connected themes.
+  if [ -d "$SNAP/data-dir/themes" ]; then
+    ln -sf "$SNAP/data-dir/themes" "$XDG_DATA_HOME"
+    ln -sfn "$SNAP/data-dir/themes" "$SNAP_USER_DATA/.themes"
+  elif [ -d "$SNAP_DESKTOP_RUNTIME/usr/share/themes" ]; then
+    ln -sf "$SNAP_DESKTOP_RUNTIME/usr/share/themes" "$XDG_DATA_HOME"
+    ln -sfn "$SNAP_DESKTOP_RUNTIME/usr/share/themes" "$SNAP_USER_DATA/.themes"
+  fi
+fi
+
+# Testability support
+append_dir LD_LIBRARY_PATH "$SNAP/testability"
+append_dir LD_LIBRARY_PATH "$SNAP/testability/$ARCH"
+append_dir LD_LIBRARY_PATH "$SNAP/testability/$ARCH/mesa"
+
+
+[ "$needs_update" = true ] && echo "SNAP_DESKTOP_LAST_REVISION=$SNAP_REVISION" > "$SNAP_USER_DATA/.last_revision"
+
+wait_for_async_execs
+
+if [ -n "$SNAP_DESKTOP_DEBUG" ]; then
+  echo "desktop-launch elapsed time: $(date +%s.%N --date="$START seconds ago")"
+  echo "Now running: exec $*"
+fi
+
+PATH="${SNAP}/usr/sbin:${SNAP}/usr/bin:${SNAP}/sbin:${SNAP}/bin"
+PATH="${PATH}:${SNAP_CORE_DIR}/usr/sbin:${SNAP_CORE_DIR}/usr/bin:${SNAP_CORE_DIR}/sbin:${SNAP_CORE_DIR}/bin"
+
+# configure python environment
+export PYTHONIOENCODING=utf-8
+PYTHONPATH=$SNAP/lib/python3.10/site-packages
+PYTHONPATH=$SNAP/usr/lib/python3/site-packages:$PYTHONPATH
+PYTHONPATH=$SNAP/usr/lib/python3/dist-packages:$PYTHONPATH
+export PYTHONPATH
+export PYTHON=$SNAP/usr/bin/python3.10
+export SNAP_PYTHON=$PYTHON
+# ensure curtin points at PYTHON
+export PY3OR2_PYTHON=$PYTHON
+# base directory for subiquity to locate resources
+export SUBIQUITY_ROOT=$SNAP
+
+BIN="$PYTHON -m system_setup.cmd.server"
+args=""
+for arg in $@; do
+  if [ ${arg} = "--server-only" ]; then
+    # Just eat that argument. It's useful for the GUI context only,
+    # since here the server only startup option is the default.
+    continue
+  fi
+  if [ ${arg} = "-t" -o ${arg} = "--text" ]; then
+    BIN="$PYTHON -m system_setup.cmd.tui"
+    continue
+  fi
+  args="$args $arg"
+done
+
+exec $BIN $args