chronos is not available in Nim Playground?
> `chronos` is available in the [Nim Playground](https://play.nim-lang.org/#ix=2TpS)

This doesn't seem to be true at the moment.

I get this output for Nim v2.0 and latest:

```
Hint: used config file '/playground/nim/config/nim.cfg' [Conf]
Hint: used config file '/playground/nim/config/config.nims' [Conf]
...................................................................................................................................................Killed
```

and this output with v1.6.14:

```
Hint: used config file '/playground/nim/config/nim.cfg' [Conf]
Hint: used config file '/playground/nim/config/config.nims' [Conf]
..........................................................
/usercode/in.nim(1, 8) Error: cannot open file: chronos
```