Advent of Nim 2020 megathread

[fxn]

Parsed the input with
    
    
    import strutils, sequtils
    
    proc readIntsFromStdin*: seq[int] =
        toSeq(stdin.lines).map(parseInt)
    
    
    Run

which is the first function I throw into a file with utilities for subsequent 
problems in AoC.

That one-liner is beautiful, there is no direct proc to fetch all lines right?