How do I create a 1px line in Interface Builder?

Question

Note, I\'m looking to make a 1px line, not a 1pt line. Meaning it should be 1px regardless of screen scale (so 0.5pt on Retina devices).

I can do this programmatica

Answer 1

Based on @Nevs12 's answer and it's comments, I think it makes more sense to use such thing:

extension NSLayoutConstraint {
    @IBInspectable var usePixels: Bool {
        get {
            return false // default Value
        }
        set {
            if newValue {
                constant = constant / UIScreen.mainScreen().scale
            }
        }
    }
}