vcs import src ＜ ros2. Repos failed

Found on the Internet ros Installation tutorial ：
But there was a problem when running to the next few

 1. mkdir -p ~/ros2_ws/src
 2. cd ~/ros2_ws
 3. wget https://raw.githubusercontent.com/ros2/ros2/dashing/ros2.repos
 4. vcs import src < ros2.repos

Step 3: report an error ： It has something to do with the Internet , Mainly raw.githubusercontent.com Of DNS The contaminated , It is difficult to visit China . Also tried in host This website is used in the document IP. Also failed . So use its mirror website ghproxy.com. Step 3 is modified to the following code .

wget https://ghproxy.com/raw.githubusercontent.com/ros2/ros2/dashing/ros2.repos

perform

vcs import src < ros2.repos

Will get stuck , error , Overtime … Like the following

Sure ctrl+z Manual end vim

sudo vim ros2.repos

Then I found that the source code is like this , It's from github Next git Coming down . Domestic visit github Often error timeout , It's no wonder that the download failed for half a day . You can hang up VPN To solve , Of course, you can also download it from the mirror website . We use the second method to solve .

Use the global replacement function :%s/github.com/github.com.cnpmjs.org/g

esc+：wq Save and exit . And then it runs again

vcs import src < ros2.repos

Finally, compile with the following statement ：

colcon build --symlink-install