Make mkIpythonKernel and mkJupyterShell proper functions

flake.nix

@@ -18,8 +18,8 @@
     packages.${system} = {
       poetry2nix = poetry2nix.lib.mkPoetry2Nix {inherit pkgs;};
       catppuccin_jupyterlab = import ./catppuccin_jupyterlab/default.nix;
-      mkIpythonKernel = import ./ipykernel.nix;
-      mkJupyterShell = import ./jupyter.nix;
+      mkIpythonKernel = attrs: (pkgs.callPackage ./ipykernel.nix attrs);
+      mkJupyterShell = attrs: (pkgs.callPackage ./jupyter.nix attrs);
       default = self.packages.${system}.mkJupyterShell;
     };
   };

ipykernel.nix

@@ -1,12 +1,12 @@
 {
-  pkgs,
+  writeTextFile,
   name,
   pyenv,
   ...
 }: let
   interpreter = pyenv.interpreter; # TODO ensure ipykernel package installed somehow...
 in
-  pkgs.writeTextFile {
+  writeTextFile {
     name = "${name}-ipykernel";
     destination = "/kernels/${name}/kernel.json";
     text = builtins.toJSON {