Enable plymouth by default

debian/control

@@ -44,6 +44,8 @@ Depends: kali-themes-common (= ${source:Version}),
  gtk2-engines-murrine,
 # Needed for QT_QPA_PLATFORMTHEME=gtk2 to have an effect
  qt5-style-plugins,
+# For boot-time splash screen
+ plymouth-label,
  ${misc:Depends}
 Breaks: kali-defaults (<< 2019.4.0)
 Replaces: kali-defaults (<< 2019.4.0)

debian/kali-themes.postinst

@@ -48,6 +48,8 @@ if [ "$1" = "configure" ]; then
 	# Install remaining new files
         install_all
     fi
+    # Rebuild the grub configuration with our config changes
+    update-grub || true
 fi
 
 #DEBHELPER#

etc/default/grub.d/kali-themes.conf

@@ -1,3 +1,7 @@
 # Try to force a 16x9 mode first, then 16x10, then default
 GRUB_GFXMODE="1920x1080,1280x720,1280x800,auto"
 GRUB_THEME="/boot/grub/themes/kali/theme.txt"
+# Add splash option to enable plymouth
+if ! echo "$GRUB_CMDLINE_LINUX_DEFAULT" | grep -q splash; then
+    GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT splash"
+fi