chore: more changes to flake.nix

flake.nix

@@ -14,14 +14,15 @@
 
         # Define Python version and packages
         pythonVersion = "python311"; # You can change this to python310, python312, etc.
+        pythonEnv = pkgs.${pythonVersion}; # Get the specific Python environment
+        
         pythonPackages = ps: with ps; [
           # Core Python
-          pkgs.${pythonVersion}
+         #pkgs.${pythonVersion}
 
-          # Common development tools
-          pip
-          setuptools
-          wheel
+          pythonEnv.pkgs.pip
+          pythonEnv.pkgs.setuptools
+          pythonEnv.pkgs.wheel
 
           # Example useful packages (uncomment and add as needed)
           # black             # Code formatter
@@ -41,17 +42,7 @@
           # Environment variables you might want to set
           shellHook = ''
             echo "Welcome to the Python development shell!"
-            export PATH="$HOME/.local/bin:$PATH" # Example: if you install packages globally via pip (not recommended with Nix)
-            # If you are using a specific Python version managed by Nix, you might
-            # want to ensure it's in your PATH. The above `packages` should handle this.
-
-            # You can also set up virtual environments here if you prefer,
-            # although Nix aims to manage dependencies directly.
-            # Example: using venvwrapper if installed
-            # if [ -f "$(command -v venvwrapper.sh)" ]; then
-            #   export WORKON_HOME=$HOME/.virtualenvs
-            #   source $(command -v venvwrapper.sh)
-            # fi
+            export NIX_PROJECT_SHELL="SPARC"
           '';
         };
       }