Yes, but 'pure' might mean different things at different levels. In a programming language, 'pure' would just refer to "function where you get the same output

Yes, but 'pure' might mean different things at different levels. In a programming language, 'pure' would just refer to "function where you get the same output from the same input; no side effects". In parent's case, there was an 'impurity' such that the package is meaningfully different depending on the machine it was built on.