You can use the regular NSLayoutConstraints.activate() API, or you can set it back to true.

Also, notice that translatesAutoresizingMaskIntoConstraints will only be set on the view which you call `layout` on. I.e. this is bogus:

    self.contentView.layout { make in
          make.left.equal(self.otherView)
    }

But this is “fine”:

    self.otherView.layout { make in
        make.left.equal(self.contentView)
    }

Of course now you’re relying on implementation details of SnapKot/Masonry/whatever.

I personally just use the built-in anchor APIs with a few helpers (e.g. to create constraints to match all 4 edges of two views). In swift you have operator+ for arrays, so NSLayoutConstraints.activate(...) can be pretty succint this way.