// standard constraint syntax

			NSLayoutConstraint.activate([
				avatar.widthAnchor.constraint(equalToConstant: 40.0),
				avatar.heightAnchor.constraint(equalToConstant: 40.0),

				stack.topAnchor.constraint(equalTo: titleView.topAnchor),
				stack.leadingAnchor.constraint(equalTo: titleView.leadingAnchor),
				stack.trailingAnchor.constraint(lessThanOrEqualTo: titleView.trailingAnchor),
				stack.bottomAnchor.constraint(equalTo: titleView.bottomAnchor),
			])

			let c = titleView.widthAnchor.constraint(equalToConstant: CGFloat.greatestFiniteMagnitude)
			c.priority = .defaultLow
			c.isActive = true

// or, if you want to use SnapKit

			avatar.snp.makeConstraints { make in
				make.width.height.equalTo(40)
			}
			stack.snp.makeConstraints { make in
				make.top.leading.trailing.bottom.equalToSuperview()
			}
			titleView.snp.makeConstraints { make in
				make.width.equalTo(CGFloat.greatestFiniteMagnitude).priority(.low)
			}