When there is a compilation error, nim tells you the line number and column where the error was found, but it does not show you the actual line or statement that fails to compile. In some cases, such as when the compiler cannot determine which of several possible procedures you wanted to call, this makes it harder to understand the error. It would be great if there was a way to ask nim to show you the failing line (perhaps even show you a few lines of context before and after the failing line).
I would prefer that this were the default behavior, and to be able to add some context lines to the error message, but at least I can do what I wanted.