refactor: optimize attribute flattening in pjsk-cursor package definition

pkgs/pjsk-cursor/default.nix

@@ -88,16 +88,48 @@ let
     in
     allJoined // lib.recurseIntoAttrs variants;
 
-  # Flatten everything for CI visibility in 'packages'
-  flattenTree = prefix: tree:
+  # Create flat attribute set for CI visibility
+  flatOutputs =
     let
-      recurse = p: t:
-        if lib.isDerivation t then { "${p}" = t; }
-        else if builtins.isAttrs t then
-          lib.concatMapAttrs (n: v: if n == "recurseForDerivations" then { } else recurse (if p == "" then n else "${p}-${n}") v) t
-        else { };
+      variantNames = [ "ani" "cur" ];
+      groupNames = builtins.attrNames groups;
+
+      # Individual cursors (e.g., pjsk-cursor-ani-n25-mizuki)
+      individuals = lib.concatLists (map
+        (v:
+          lib.concatLists (map
+            (g:
+              map (c: {
+                name = "pjsk-cursor-${v}-${g}-${c}";
+                value = pjsk-cursor-tree.${v}.${g}.${c};
+              }) groups.${g}
+            )
+            groupNames)
+        )
+        variantNames);
+
+      # Group-joined cursors (e.g., pjsk-cursors-ani-n25)
+      groupJoined = lib.concatLists (map
+        (v:
+          map (g: {
+            name = "pjsk-cursors-${v}-${g}";
+            value = pjsk-cursors-tree.${v}.${g};
+          }) groupNames
+        )
+        variantNames);
+
+      # Variant-joined cursors (e.g., pjsk-cursors-ani)
+      variantJoined = map
+        (v: {
+          name = "pjsk-cursors-${v}";
+          value = pjsk-cursors-tree.${v};
+        })
+        variantNames;
+
+      # Top-level joined (pjsk-cursors)
+      allJoined = { name = "pjsk-cursors"; value = pjsk-cursors-tree; };
     in
-    recurse prefix tree;
+    builtins.listToAttrs (individuals ++ groupJoined ++ variantJoined ++ [ allJoined ]);
 
 in
 {
@@ -106,5 +138,5 @@ in
   pjsk-cursors = pjsk-cursors-tree;
 
   # Flat access for CI
-  flat = (flattenTree "pjsk-cursor" pjsk-cursor-tree) // (flattenTree "pjsk-cursors" pjsk-cursors-tree);
+  flat = flatOutputs;
 }