Serving prison time "at the pleasure of the king or queen" (historically at Her/His Majesty’s pleasure) is a legal term for an indefinite or life sentence where a prisoner has no fixed release date. Instead, their continued detention depends on the ongoing discretion or review of the Crown (or government parole authorities acting in its name)
In Commonwealth republics, such as Botswana,[7] India,[8] Kenya,[9] Pakistan, Singapore,[10] South Africa,[11] and Sri Lanka, the phrase is "during the president's pleasure". This term is also applied in other republics that are outside of the Commonwealth, such as Brazil, Croatia, Egypt, Finland, France, Iceland, Ireland, Italy, South Korea, Mexico, Montenegro, Portugal and Serbia.
So no 8th, 5th or 14th amendments in these countries.
Makes me wonder how long they will last in the United States given the way things are currently going.