refactor(flake): discover project packages

src/flake/packages.nix

@@ -6,13 +6,33 @@
 }:
 let
   pkgs = inputs.nixpkgs.legacyPackages.${system};
+
+  packageDirs =
+    dir:
+    lib.flatten (
+      lib.mapAttrsToList (
+        name: type:
+        let
+          path = dir + "/${name}";
         in
-{
+        if type == "directory" then
-  xatu = import ../xatu/package.nix {
+          packageDirs path
+        else if type == "regular" && name == "package.nix" then
+          [ dir ]
+        else
+          [ ]
+      ) (builtins.readDir dir)
+    );
+
+  package = dir: {
+    name = builtins.baseNameOf (toString dir);
+    value = import (dir + "/package.nix") {
       inherit
         lib
         pkgs
         root
         ;
     };
-}
+  };
+in
+builtins.listToAttrs (map package (packageDirs (root + "/src")))