Well your proc chrome() returns a string. In Nim returned values are not silently discarded by default, unless you apply discardable pragma to the proc.
So you can write in your code
echo chrome()
var myStr = chrome()
discard chrome()
Or, if you really intent to be able to discard the result, then see Nim manual
for discardable pragma. Maybe chrome() proc is not really intended to return a
result at all, so fix that proc.
