init commit

overlays/default.nix

@@ -0,0 +1,21 @@
+{ flake, ... }:
+
+let
+  inherit (flake) inputs;
+  inherit (inputs) self;
+
+  pkgsDir = ../packages; # This must be absolute or relative to this file
+
+  # List only subdirs with default.nix
+  packageDirs = builtins.filter (name: builtins.pathExists (pkgsDir + "/${name}/default.nix")) (
+    builtins.attrNames (builtins.readDir pkgsDir)
+  );
+
+in
+self: super:
+builtins.listToAttrs (
+  map (name: {
+    name = name;
+    value = self.callPackage (pkgsDir + "/${name}") { };
+  }) packageDirs
+)