[Haskell-cafe] StdGen Reliability Across Versions / Systems

I know that, ff you feed mkStdGen a particular seed, and pull a list of random numbers from that StdGen, that that the list will always be the same if your run your compiled program over and over again on that same system. But which of the following will cause you to get different output?: 1) Changes in GHC version 2) Changes in "random" library version 3) Compiling / Running on a different host computer (but compiling with the same GHC & random versions. -- https://qlfiles.net My PGP public key ID is 0x340EA95A (pgp.mit.edu).