Update jupyter to include the venvDir

jupyter/flake.nix

@@ -3,22 +3,20 @@
 
   inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
 
-  outputs =
-    { self
-    , nixpkgs
-    ,
-    }:
-    let
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
     supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
     forEachSupportedSystem = f:
       nixpkgs.lib.genAttrs supportedSystems (system:
         f {
           pkgs = import nixpkgs {inherit system;};
         });
-    in
-    {
+  in {
     devShells = forEachSupportedSystem ({pkgs}: {
       default = pkgs.mkShell {
+        venvDir = "venv";
         packages = with pkgs;
           [python311 virtualenv]
           ++ (with pkgs.python311Packages; [