Cleanup: the VR pet's tmpfs icon link (artifact pet)

<runtimeDir>/steam-frame-nix/vr-pet: icon.png when it links to a
*-vr-pet-icons store icon, its empty .lock and stray .icon.tmp.* links,
then the directory; kept by --orphans --keep pet. The empty runtime
directory now also goes with --orphans.

install.sh

@@ -75,7 +75,7 @@ Commands:
                      or before removing it.
         --orphans    what the configuration no longer uses (run by the Home
                      Manager module on every switch); keeps saved choices.
-        --keep       still in use (with --orphans): debugger, screenshots
+        --keep       still in use (with --orphans): debugger, screenshots, pet
         --dry-run    only print what would be done
         --quiet      print only actions, deferrals and warnings
       SteamVR's VRWebHelper.DebuggerEnabled can't be changed while SteamVR
@@ -825,6 +825,26 @@ clean_screenshots() { # keep
   fi
 }
 
+# --- VR pet "+" menu icon link (tmpfs) ---
+
+clean_pet() { # keep
+  local d=$SFN_RUNTIME/vr-pet l f
+  (( $1 )) && return 0
+  [[ -d $d && ! -L $d ]] || return 0
+  l=$d/icon.png
+  if [[ -L $l ]]; then
+    if [[ $(readlink "$l") == /nix/store/*-vr-pet-icons/*.png ]]; then
+      c_rm "$l" "link to the VR pet's \"+\" menu icon"
+    else
+      c_left "$l (not a link to a VR pet icon)"
+    fi
+  fi
+  while IFS= read -r -d '' f; do
+    c_rm "$f" "the VR pet icon's lock or unfinished link"
+  done < <(find "$d" -mindepth 1 -maxdepth 1 \( -name .lock -type f -empty -o -name '.icon.tmp.*' -type l \) -print0)
+  c_rmdir "$d"
+}
+
 # --- dashboard patch state ---
 
 clean_ui_state() { # all
@@ -845,7 +865,7 @@ clean_ui_state() { # all
 }
 
 cmd_cleanup() {
-  local mode='' all=0 keep_debugger=0 keep_screenshots=0 keeps=0 k
+  local mode='' all=0 keep_debugger=0 keep_screenshots=0 keep_pet=0 keeps=0 k
   while (( $# )); do
     case $1 in
       --all) mode=all; shift ;;
@@ -858,7 +878,8 @@ cmd_cleanup() {
         case $k in
           debugger) keep_debugger=1 ;;
           screenshots) keep_screenshots=1 ;;
-          *) die "cleanup: unknown artifact '$k' for --keep (debugger, screenshots)" ;;
+          pet) keep_pet=1 ;;
+          *) die "cleanup: unknown artifact '$k' for --keep (debugger, screenshots, pet)" ;;
         esac ;;
       -h|--help) usage; exit 0 ;;
       *) die "cleanup: unknown option '$1' (see --help)" ;;
@@ -880,7 +901,9 @@ cmd_cleanup() {
   clean_ui_state "$all"
   c_rmdir "$SFN_STATE"
   clean_screenshots "$keep_screenshots"
-  if (( all )); then clean_launchers; c_rmdir "$SFN_RUNTIME"; fi
+  clean_pet "$keep_pet"
+  (( all )) && clean_launchers
+  c_rmdir "$SFN_RUNTIME"
   (( CLEAN_ACTIONS || ${#CLEAN_DEFERRED[@]} || CLEAN_QUIET )) || info "nothing to clean up"
   return 0
 }

modules/cleanup/check.nix

@@ -59,6 +59,9 @@ pkgs.runCommand "cleanup-check" { nativeBuildInputs = [ cleanup pkgs.jq ]; } ''
   : > $root/run/steam-frame-nix/applications/.lock
   ln -s $HOME/.local/share/Steam/userdata/1/760/remote/250820/screenshots \
     $root/run/steam-frame-nix/screenshots               # steamFrame.screenshots
+  mkdir -p $root/run/steam-frame-nix/vr-pet             # steamFrame.pet
+  ln -s /nix/store/00000000000000000000000000000000-vr-pet-icons/ginger.png $root/run/steam-frame-nix/vr-pet/icon.png
+  : > $root/run/steam-frame-nix/vr-pet/.lock
   echo old > $root/run/systemd/user/steamvr.service.d/50-steam-frame-nix-debugger.conf
   echo keep > $root/run/systemd/user/steamvr.service.d/other.conf
   ln -s /nix/store/00000000000000000000000000000000-breeze-icons-6.30.0/share/icons/breeze/apps/64/utilities-terminal.svg $I/utilities-terminal.svg
@@ -80,6 +83,7 @@ pkgs.runCommand "cleanup-check" { nativeBuildInputs = [ cleanup pkgs.jq ]; } ''
   mkdir -p $HOME/.var/app/org.jellyfin.JellyfinDesktop
   echo so > $HOME/.var/app/org.jellyfin.JellyfinDesktop/mpv-hwdec-shim.so; touch $S/jellyfin-hwdec-shim
   echo '{"a":1}' > $S/ui-patches/frame-controls.json; echo '{' > $S/ui-patches/vr-cat.json.tmp
+  echo '{"model":"shiba"}' > $S/ui-patches/vr-pet.json
   echo mine > $S/ui-patches/notes.txt
 
   exec 9< $F/d.busy/.parentlock                     # Firefox "uses" d.busy
@@ -118,7 +122,7 @@ pkgs.runCommand "cleanup-check" { nativeBuildInputs = [ cleanup pkgs.jq ]; } ''
   there $O/org.example.Other
   gone $HOME/.var/app/org.jellyfin.JellyfinDesktop/mpv-hwdec-shim.so $S/jellyfin-hwdec-shim
   # ui state: ours gone, foreign file kept (so the dirs stay)
-  gone $S/ui-patches/frame-controls.json $S/ui-patches/vr-cat.json.tmp
+  gone $S/ui-patches/frame-controls.json $S/ui-patches/vr-cat.json.tmp $S/ui-patches/vr-pet.json
   there $S/ui-patches/notes.txt
   noop --all
   exec 9<&-
@@ -200,10 +204,24 @@ pkgs.runCommand "cleanup-check" { nativeBuildInputs = [ cleanup pkgs.jq ]; } ''
   there $root/run/steam-frame-nix/screenshots
   res=$(steam-frame-nix-cleanup --orphans)
   gone $root/run/steam-frame-nix/screenshots
-  ln -s /elsewhere $root/run/steam-frame-nix/screenshots
+  mkdir -p $root/run/steam-frame-nix; ln -s /elsewhere $root/run/steam-frame-nix/screenshots
   res=$(steam-frame-nix-cleanup --orphans)
   has "$res" "left alone: $root/run/steam-frame-nix/screenshots"
   rm -r $root/run/steam-frame-nix
+  # VR pet icon link: kept while used, a foreign link and file left alone
+  P=$root/run/steam-frame-nix/vr-pet; mkdir -p $P
+  ln -s /nix/store/00000000000000000000000000000000-vr-pet-icons/fox.png $P/icon.png
+  : > $P/.lock; ln -s /nix/store/00000000000000000000000000000000-vr-pet-icons/fox.png $P/.icon.tmp.123
+  res=$(steam-frame-nix-cleanup --orphans --keep pet)
+  there $P/icon.png $P/.lock $P/.icon.tmp.123
+  res=$(steam-frame-nix-cleanup --orphans)
+  gone $P
+  noop --orphans
+  mkdir -p $P; ln -s /elsewhere.png $P/icon.png; echo mine > $P/notes
+  res=$(steam-frame-nix-cleanup --orphans)
+  has "$res" "left alone: $P/icon.png"
+  there $P/icon.png $P/notes
+  rm -r $root/run/steam-frame-nix
   ! steam-frame-nix-cleanup --all --keep debugger 2>/dev/null || fail "--all --keep accepted"
   ! steam-frame-nix-cleanup --orphans --keep bogus 2>/dev/null || fail "unknown --keep accepted"
   echo "C ok"