I've been using nixpkgs for almost a year on an age-old linux distro controlled by my company. It replaced gentoo-prefix, which was error prone and hated RH ba

I've been using nixpkgs for almost a year on an age-old linux distro controlled by my company. It replaced gentoo-prefix, which was error prone and hated RH based distros. Nixpkgs works really well and the separated environment makes maintenance easier to control. It occasionally breaks upgrade of some packages, but it never affects the working environment. It seems with 16.03 they are bold enough to go gcc 5.3. It would be interesting to test out my toolchains against the gcc 5 series, but I still don't see gcc 5 being the default on the Nixpkgs. I guess I'll wait a bit longer to waste my time on gcc 5.