安装外包报错

Warning: Pub installs executables into $HOME/.pub-cache/bin, which is not on your path.
You can fix that by adding this to your shell's config file (.bashrc, .bash_profile, etc.):
  export PATH="$PATH":"$HOME/.pub-cache/bin"

打开~ > .bash_profile把export PATH="$PATH":"$HOME/.pub-cache/bin"添加进去，然后更新环境变量。

source ~/.bash_profile

修改配置需要重启编译器。