Add triton to nix shell

shell.nix

@@ -3,9 +3,11 @@ mkShell {
   buildInputs = [
     nodejs
     deno
+    nodePackages.json
+    nodePackages.triton
   ];
 
   shellHook = ''
-    export PATH="$PATH:/home/ben/.deno/bin"
+    eval "$(triton env --triton)"
   '';
 }