khadas vim3 按照网上的方法可以正常安装ros2，但是按照ros1则可能会有一些奇奇怪怪的问题导致按照失败，不过在一位群友的帮助下，找到了解决的方法。khadas vim3 将源换为下面，再按照网上其他ros1安装方式就可以正常安装了。
deb http://mirrors.tencent.com/ubuntu-ports/ focal main restricted universe multiverse deb http://mirrors.tencent.com/ubuntu-ports/ focal-security main restricted universe multiverse deb http://mirrors.tencent.com/ubuntu-ports/ focal-updates main restricted universe multiverse deb http://mirrors.tencent.com/ubuntu-ports/ focal-proposed main restricted universe multiverse deb http://mirrors.tencent.com/ubuntu-ports/ focal-backports main restricted universe multiverse deb-src http://mirrors.tencent.com/ubuntu-ports/ focal main restricted universe multiverse deb-src http://mirrors.tencent.com/ubuntu-ports/ focal-security main restricted universe multiverse deb-src http://mirrors.tencent.com/ubuntu-ports/ focal-updates main restricted universe multiverse deb-src http://mirrors.tencent.com/ubuntu-ports/ focal-proposed main restricted universe multiverse deb-src http://mirrors.tencent.com/ubuntu-ports/ focal-backports main restricted universe multiverse
然后再
sudo apt update sudo apt upgrade
再然后按网上ros1的安装步骤即可
