There is also GNU Mes, which is able to build a GCC toolchain starting from nothing but a Scheme interpreter: https://www.gnu.org/software/mes/ https://www.gnu

There is also GNU Mes, which is able to build a GCC toolchain starting from nothing but a Scheme interpreter: https://www.gnu.org/software/mes/ https://www.gnu.org/software/mes/ Practical implementation notes can be found on the Guix blog: https://guix.gnu.org/blog/2019/guix-reduces-bootstrap-seed-by-50/ https://guix.gnu.org/blog/2019/guix-reduces-bootstrap-seed-b... https://guix.gnu.org/blog/2020/guix-further-reduces-bootstrap-seed-to-25/ https://guix.gnu.org/blog/2020/guix-further-reduces-bootstra...