multilib

On 64bit systems, if you want to be able to compile 32bit and 64bit binaries
Name Category Description
gcc sys-devel The GNU Compiler Collection
glibc sys-libs GNU libc C library
gnat-gpl dev-lang GNAT Ada Compiler - GPL version
gosuslugi-plugin www-plugins Crypto-provider browser plugin for russian e-gov site https://gosuslugi.ru/
libstdc++-v3 sys-libs Compatibility package for binaries linked against a pre gcc 3.4 libstdc++
mumble net-voip Mumble is an open source, low-latency, high quality voice chat software
nvidia-cg-toolkit media-gfx NVIDIA's C graphics compiler toolkit
rr dev-util Record and Replay Framework

Thank you!