The default source of the Raspberry Pi is foreign. apt-get fails during installation, and we need to update it to a domestic one.
1. Edit sources.list
Open terminal input
sudo nano /etc/apt/sources.list
Use # to comment or directly delete the original content and add two new items:
deb http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ stretch main contrib non-free rpi
#deb-src http://mirrors.tuna.tsinghua.edu.cn/raspbian/raspbian/ stretch main contrib non-free rpi
ctrl+x to save and exit.
2. Edit raspi.list
sudo nano /etc/apt/sources.list.d/raspi.list
Use # to comment or directly delete the original content and add two new items:
deb http://mirror.tuna.tsinghua.edu.cn/raspberrypi/ stretch main ui
#deb-src http://mirror.tuna.tsinghua.edu.cn/raspberrypi/ stretch main ui
Update the software source list:
sudo apt-get update
3. Install the new version of vim
sudo apt-get install vim