diff --git a/flake.nix b/flake.nix
index edb0fa5..59261f5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -21,7 +21,14 @@
           overlays = [ overlay ];
         };
 
-      overlayPkgs = system: overlay (pkgsFinal system) (pkgsPrev system);
+      flakePackages =
+        system:
+        import ./pkgs {
+          pkgs = pkgsFinal system;
+          prev = pkgsPrev system;
+          lib = (pkgsPrev system).lib;
+          forFlakeOutputs = true;
+        };
 
       mkDefault = p: if p ? raganything then p.raganything else p.${builtins.head (lib.attrNames p)};
     in
@@ -31,7 +38,7 @@
       packages = forAllSystems (
         system:
         let
-          p = overlayPkgs system;
+          p = flakePackages system;
         in
         p // { default = mkDefault p; }
       );
diff --git a/pkgs/by-name/lm/lmstudio/default.nix b/pkgs/by-name/lm/lmstudio/default.nix
index a488785..46d5ea3 100644
--- a/pkgs/by-name/lm/lmstudio/default.nix
+++ b/pkgs/by-name/lm/lmstudio/default.nix
@@ -7,13 +7,13 @@
 
 let
   pname = "lmstudio";
-  version = "0.4.6-1";
+  version = "0.4.2-2";
 
   url = "https://installers.lmstudio.ai/linux/x64/${version}/LM-Studio-${version}-x64.AppImage";
 
   src = fetchurl {
     inherit url;
-    hash = "sha256-FHZ64zmnqHrQyX4ift/lVUzW+HiCVkXpWVa4hkssX/k=";
+    hash = "sha256-JxGlqgsuLcW81mOIcntVFSHv19zSFouIChgz/egc+J0=";
   };
 
   contents = appimageTools.extractType2 { inherit pname version src; };
diff --git a/pkgs/default.nix b/pkgs/default.nix
index bce8587..f874bea 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -2,6 +2,7 @@
   pkgs,
   prev,
   lib,
+  forFlakeOutputs ? false,
   ...
 }:
 let
@@ -19,9 +20,15 @@ let
           name:
           let
             pkgDir = shorthandDir + "/${name}";
+            defaultFile = pkgDir + "/default.nix";
+            imported = builtins.tryEval (import defaultFile);
           in
-          if builtins.pathExists (pkgDir + "/default.nix") then
-            { ${name} = callPackage pkgDir { }; }
+          if !builtins.pathExists defaultFile || !imported.success then
+            { }
+          else if builtins.isFunction imported.value then
+            { ${name} = callPackage defaultFile { }; }
+          else if lib.isDerivation imported.value then
+            { ${name} = imported.value; }
           else
             { };
       in
@@ -39,5 +46,7 @@ let
       packagesFromTree
       ;
   };
+
+  overlayAttrs = byNamePkgs // byCategoryPkgs;
 in
-byNamePkgs // byCategoryPkgs
+if forFlakeOutputs then lib.filterAttrs (_: lib.isDerivation) overlayAttrs else overlayAttrs