Fix bug in flake file

flake.nix

@@ -17,12 +17,12 @@
 
         # Get all project directories
         currentDir = builtins.readDir ./.;
-        dirs = lib.filterAttrs (_: v: v == "directory") currentDir;
+        dirs = builtins.attrNames (lib.filterAttrs (_: v: v == "directory") currentDir);
       in
-        lib.concatMapAttrs (dir: _: {
+        builtins.foldl' lib.recursiveUpdate {} (builtins.map (dir: {
           packages.${dir} = pkgs.callPackage ./${dir} {};
         } // lib.optionalAttrs (hasShell dir) {
           devShells.${dir} = pkgs.callPackage ./${dir}/shell.nix {};
-        }) dirs
+        }) dirs)
     );
 }

python/default.nix

@@ -1,4 +1,4 @@
-{ python3, ... }:
+{ python3 }:
 
 python3.pkgs.buildPythonApplication {
   pname = "soe-python";

python/shell.nix

@@ -1,2 +1,3 @@
-{ python3, ... }:
+{ python3 }:
+
 python3.buildEnv.env