Opensource development package for Miyoo handhelds
sudo apt install -y wget unzip build-essential git bc swig libncurses-dev libpython3-dev libssl-dev cpio rsync subversion python3 mercurial imagemagick btrfs-progs
git clone https://github.com/MiyooCFW/buildroot
cd buildroot
make miyoo_uclibc_defconfig
cd buildroot
make miyoo_musl_defconfig
make
If you have a multicore CPU, you can try
make -j ${YOUR_CPU_COUNT}
or buy a powerful PC for yourself.
load output/images/miyoo-cfw-*.img on sdcard
You will have to answer a few questions on first boot, represented on graphic below: