+devshell structure

flake.nix

@@ -75,27 +75,14 @@
         import ./lib {lib = pkgs.lib;}
     );
 
-    # Development shell for working on this repository
+    # Development shells for various programming environments
+    # Usage: nix develop .#<shell-name>
+    # Available shells: default, rust, python, nodejs, go, cpp, web, devops, data-science
     devShells = forAllSystems (
       system: let
         pkgs = pkgsFor system;
-      in {
-        default = pkgs.mkShell {
-          buildInputs = with pkgs; [
-            nil # Nix LSP
-            nixpkgs-fmt # Nix formatter
-            nix-tree # Explore dependency trees
-          ];
-
-          shellHook = ''
-            echo "🚀 m3ta-nixpkgs development environment"
-            echo "Available commands:"
-            echo "  nix flake check    - Check flake validity"
-            echo "  nix flake show     - Show flake outputs"
-            echo "  nix build .#<pkg>  - Build a package"
-          '';
-        };
-      }
+      in
+        import ./shells {inherit pkgs;}
     );
 
     # Formatter for 'nix fmt'