我在做一些 Rails 开发时不小心安装了 postres-xc 而不是普通的 postgres 包。我立即去删除 postgres-xc，但 apt-get 不会卸载它。我也尝试安装常规的 postgres，但它以同样的方式失败。
sudo apt-get 删除 postgres-xc 输出：
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
comerr-dev krb5-multidev libgraphics-magick-perl libgraphicsmagick++1-dev libgraphicsmagick++3 libgraphicsmagick1-dev libgraphicsmagick3 libgssrpc4 libkadm5clnt-mit8 libkadm5srv-mit8
libkdb5-6 libkrb5-dev libpq-dev libpq5 libssl-dev libssl-doc linux-headers-3.5.0-17
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
postgres-xc
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. …