add dark theme warning

helper_scripts/command_exists.sh

+command_exists() {
+    cmd=$1
+
+    if command -v $cmd &> /dev/null
+    then
+        true
+    else
+        false
+    fi
+}

setup.sh

@@ -4,6 +4,7 @@ INSTALLER_DIR=$(dirname "${BASH_SOURCE[0]}")
 HELPER_SCRIPTS_DIR="$INSTALLER_DIR/helper_scripts"
 
 source "$HELPER_SCRIPTS_DIR/packages.sh"
+source "$HELPER_SCRIPTS_DIR/command_exists.sh"
 
 NONE_IDENTIFIER="none"
 NONE_TEXT="None"
@@ -65,6 +66,10 @@ main() {
         --extra-vars "dconf_config_path='$dconf_config_path' vscode_config_path='$vscode_config_path' vscode_extensions_path='$vscode_extensions_path' swap_sizes='$swap_sizes' git_config_path='$git_config_path'" \
         --inventory "${INSTALLER_DIR}/ansible_inventory.ini" \
         $(IFS=' ' echo "${additional_ansible_args[*]}")
+
+    if command_exists flatpak; then
+        echo "If you have set your system theme to dark, you may need to update your Flatpak packages. You can use update.sh to do so."
+    fi
 }
 
 main

update.sh

@@ -4,6 +4,7 @@ INSTALLER_DIR=$(dirname "${BASH_SOURCE[0]}")
 HELPER_SCRIPTS_DIR="$INSTALLER_DIR/helper_scripts"
 
 source "$HELPER_SCRIPTS_DIR/package_manager_identifiers.sh"
+source "$HELPER_SCRIPTS_DIR/command_exists.sh"
 
 declare -A PACKAGE_MANAGERS
 PACKAGE_MANAGERS=(
@@ -24,17 +25,6 @@ ORDERED_PACKAGE_MANAGERS=(
     "$MAINLINE_KERNEL_IDENTIFIER"
 )
 
-command_exists() {
-    cmd=$1
-
-    if command -v $cmd &> /dev/null
-    then
-        true
-    else
-        false
-    fi
-}
-
 main() {
     possible_package_managers=("${DEFAULT_PACKAGE_MANAGERS[@]}")