Add some devShells

flake.nix

@@ -39,6 +39,29 @@
             rustToolchain
           ]);
         };
+
+        latex = pkgs.mkShell {
+          packages = (with pkgs; [
+            texlive.combined.scheme-full
+
+            tectonic
+          ]);
+        };
+
+        python = 
+          let
+            # Use Python 3.11
+            python = pkgs.python311;
+          in
+          pkgs.mkShell {
+            # The Nix packages provided in the environment
+            packages = [
+              # Python plus helper tools
+              (python.withPackages (ps: with ps; [
+                pip # The pip installer
+              ]))
+            ];
+          };
       });
     };
 }