[Question] how to handle user input?

readLine not working:
```
[user@userPC bin]$ ./inim
👑 INim 0.6.1
Nim Compiler Version 1.6.6 [Linux: amd64] at /usr/bin/nim
nim> var a = readLine(stdin)
/usr/lib/nim/lib/system/io.nim(156) raiseEOF
nim>
```