Depending on what you're using the random numbers for, I also have a library that makes use of system sources of random (arc4random on OpenBSD, RtlGenRandom on Windows and /dev/urandom elsewhere) that I've been working on: [https://github.com/euantorano/sysrandom.nim](https://github.com/euantorano/sysrandom.nim)
It could do with some more heavy testing, as I haven't used it outside of testing during development yet.
