Gentoo is a free and open source Linux and FreeBSD distribution that uses the Portage package management system.
Unlike typical distributions, Gentoo requires the user to compile each package's source code locally. The main benefit is that the Portage system allows the user to personalise the compilation of each package into binaries, and can automatically fetch and build any other packages the desired package depends on. The end result is a set of binaries on the system that exactly matches the system configuration and the specific functionality the user wants.
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