[[!comment format=mdwn
 username="falsifian"
 avatar="http://cdn.libravatar.org/avatar/59c3c23c500d20d83ecb9d1f149be9ae"
 subject="comment 3"
 date="2021-12-31T16:03:33Z"
 content="""
Looks like you are right. Thanks for the help! On DragonFlyBSD with ghc 8.10.7 I see:

```
copter-dfly tmp $ runghc foo.hs
testing:
testing: bar
```

I guess it is time to look at the `System.Process` module.
"""]]
