feat: "Boot into" is a sub-option of the conversion

Shown indented under the SteamOS conversion, and only while it's ticked.

AGENTS.md

@@ -133,7 +133,9 @@ gamescope and the Plasma desktop. Primary target: the Valve Steam Machine
   pacman hook can't run pacman), which triggers DKMS's install hook. The module creates
   `/sys/class/leds/valve-leds*`.
 - `boot` ("Boot into: [gamescope] / desktop") is a choice row, not a
-  checkbox: on = desktop. It needs `gaming` (ticking it ticks gaming,
+  checkbox: on = desktop. It's a sub-option of the conversion: `menu_visible`
+  only shows it (indented, `└`) while `gaming` is ticked, so menu numbers
+  after it shift by one when the conversion is unticked. It needs `gaming` (ticking it ticks gaming,
   unticking gaming unticks it) and is never preselected (`NO_PRESELECT`), so
   the conversion boots into gamescope by default. Desktop is
   `steamify-boot-desktop.service`, ordered `Before=` the login managers:

CHANGELOG.md

@@ -7,7 +7,7 @@ one per merged pull request.
 
 ## 0.10.0 - 2026-09-24
 
-- **feat: Boot into gamescope or the desktop**
+- `0f503dd` **feat: Boot into gamescope or the desktop**
   - New menu row under the conversion, "Boot into: [gamescope] / desktop";
     gamescope stays the default and is never changed on a first run.
   - Desktop: `steamify-boot-desktop.service` sets the autologin session to
@@ -16,6 +16,8 @@ one per merged pull request.
     it. Choosing desktop turns the conversion on; turning the conversion off
     resets it to gamescope.
   - The later menu items move down one (BIOS is now 8 on a Steam Machine).
+- **feat: "Boot into" is a sub-option of the conversion**
+  - Shown indented under the SteamOS conversion, and only while it's ticked.
 
 ## 0.9.1 - 2026-09-24 (#10)
 

README.md

@@ -14,9 +14,10 @@ Everything you turn off is put back the way it was.
    Desktop** in Steam works and so does going back (the **Return to Gaming
    Mode** icon on the desktop), you're back in gaming mode after a restart,
    and Steam's on-screen keyboard (Steam + X) also works on the desktop.
-2. **Boot into: [gamescope] / desktop** - where the PC starts. Gamescope
+2. **Boot into: [gamescope] / desktop** - a sub-option of 1, shown under it
-   (gaming mode) is the default; choose desktop to start in KDE Plasma
+   while it's ticked: where the PC starts. Gamescope (gaming mode) is the
-   instead, with Return to Gaming Mode one double-click away. (Needs 1.)
+   default; choose desktop to start in KDE Plasma instead, with Return to
+   Gaming Mode one double-click away.
 3. **SteamOS theme** - the Vapor look for the desktop (CachyOS's
    `cachyos-vapor` package).
 4. **Steam Deck/Machine icons** - Steam Deck button icons in gaming mode.

lib/menu.sh

@@ -34,6 +34,13 @@ component_available() {
 
 is_action() { [[ " ${ACTIONS[*]} " == *" $1 "* ]]; }
 
+menu_visible() {
+    # Shown in the menu. "Boot into" is a sub-option of the conversion: only
+    # while the conversion is ticked.
+    component_available "$1" || return 1
+    [[ "$1" != boot || "${WANTED[gaming]:-0}" == 1 ]]
+}
+
 component_selectable() {
     # Greyed out and not tickable when it has nothing to do.
     case "$1" in
@@ -76,7 +83,7 @@ show_menu() {
     printf "  ${c_bold}%-3s %-6s %-6s %s${c_reset}\n" "#" "Now" "Want" "Component"
     MENU_ITEMS=()
     for c in "${COMPONENTS[@]}"; do
-        component_available "$c" || continue
+        menu_visible "$c" || continue
         i=$((i + 1)); MENU_ITEMS[$i]=$c
         # Pad the plain word, then colour it: colour codes would count as width.
         now="off"; [[ "${CURRENT[$c]}" == 1 ]] && now="on"
@@ -89,7 +96,7 @@ show_menu() {
             now="gaming"; [[ "${CURRENT[boot]}" == 1 ]] && now="desk"
             [[ "${CURRENT[gaming]}" == 1 ]] || now="-"
             want="gaming"; [[ "${WANTED[boot]}" == 1 ]] && want="desk"
-            printf "  %-3s %-6s %-6s %s\n" "$i" "$now" "$want" "$(boot_choice "${WANTED[boot]}")"
+            printf "  %-3s %-6s %-6s   └ %s\n" "$i" "$now" "$want" "$(boot_choice "${WANTED[boot]}")"
         elif component_selectable "$c"; then
             printf "  %-3s %b %-6s %s\n" "$i" "$now" "$want" "${LABEL[$c]}"
         else
@@ -122,7 +129,7 @@ draw_menu_tui() {
     echo
     MENU_ITEMS=()
     for c in "${COMPONENTS[@]}"; do
-        component_available "$c" || continue
+        menu_visible "$c" || continue
         MENU_ITEMS[$i]=$c
         box="[ ]"; [[ "${WANTED[$c]}" == 1 ]] && box="[${c_green}x${c_reset}]"
         state="  (now: off)"; [[ "${CURRENT[$c]}" == 1 ]] && state="  (now: ${c_green}on${c_reset})"
@@ -130,10 +137,11 @@ draw_menu_tui() {
         line="$box ${LABEL[$c]}"
         if [[ "$c" == boot ]]; then
             # A choice rather than a checkbox; Space switches it.
+            # Indented under the conversion, whose sub-option it is.
             line="$(boot_choice "${WANTED[boot]}")"
-            line="${line/\[/[${c_green}}"; line="${line/\]/${c_reset}]}"
+            line="    └ ${line/\[/[${c_green}}"; line="${line/\]/${c_reset}]}"
             state="  (now: gamescope)"; [[ "${CURRENT[boot]}" == 1 ]] && state="  (now: desktop)"
-            [[ "${CURRENT[gaming]}" == 1 ]] || state="  (with the SteamOS conversion)"
+            [[ "${CURRENT[gaming]}" == 1 ]] || state=""
         fi
         if ! component_selectable "$c"; then
             # Greyed out: nothing to do (e.g. BIOS already up to date).
@@ -160,6 +168,8 @@ run_menu_tui() {
     while true; do
         draw_menu_tui "$cursor"
         count=${#MENU_ITEMS[@]}
+        # The list shrinks when the conversion (and its sub-option) is unticked.
+        if (( cursor >= count )); then cursor=$(( count - 1 )); draw_menu_tui "$cursor"; fi
         IFS= read -rsn1 key
         if [[ "$key" == $'\e' ]]; then
             IFS= read -rsn2 -t 0.05 rest