deepin@deepin ldd /usr/bin/vim
        linux-vdso.so.1 (0x00007ffd425d7000)
        libgtk-x11-2.0.so.0 => /lib/x86_64-linux-gnu/libgtk-x11-2.0.so.0 (0x00007f1e060b8000)
        libgdk-x11-2.0.so.0 => /lib/x86_64-linux-gnu/libgdk-x11-2.0.so.0 (0x00007f1e06001000)
        libgdk_pixbuf-2.0.so.0 => /lib/x86_64-linux-gnu/libgdk_pixbuf-2.0.so.0 (0x00007f1e05fdb000)
        libgio-2.0.so.0 => /lib/x86_64-linux-gnu/libgio-2.0.so.0 (0x00007f1e05e1d000)
        libpango-1.0.so.0 => /lib/x86_64-linux-gnu/libpango-1.0.so.0 (0x00007f1e05dd2000)
        libgobject-2.0.so.0 => /lib/x86_64-linux-gnu/libgobject-2.0.so.0 (0x00007f1e05d7d000)
        libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f1e05c5c000)
        libSM.so.6 => /lib/x86_64-linux-gnu/libSM.so.6 (0x00007f1e05c51000)
        libICE.so.6 => /lib/x86_64-linux-gnu/libICE.so.6 (0x00007f1e05c32000)
        libXt.so.6 => /lib/x86_64-linux-gnu/libXt.so.6 (0x00007f1e05bc7000)
        libX11.so.6 => /lib/x86_64-linux-gnu/libX11.so.6 (0x00007f1e05a86000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f1e05903000)
        libtinfo.so.5 => /lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007f1e058d5000)
        libselinux.so.1 => /lib/x86_64-linux-gnu/libselinux.so.1 (0x00007f1e058aa000)
        libcanberra.so.0 => /lib/x86_64-linux-gnu/libcanberra.so.0 (0x00007f1e05896000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f1e05891000)
        liblua5.1.so.0 => /lib/x86_64-linux-gnu/liblua5.1.so.0 (0x00007f1e05663000)
        libruby-2.3.so.2.3 => not found
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f1e05640000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f1e0547f000)
        libgmodule-2.0.so.0 => /lib/x86_64-linux-gnu/libgmodule-2.0.so.0 (0x00007f1e05479000)
        libpangocairo-1.0.so.0 => /lib/x86_64-linux-gnu/libpangocairo-1.0.so.0 (0x00007f1e05469000)
        libXcomposite.so.1 => /lib/x86_64-linux-gnu/libXcomposite.so.1 (0x00007f1e05464000)

deepin 20 的libruby 动态库应该是2.5版本的。
可以尝试一下重新安装vim

除了重装，也可以试试nano和dedit的

你的vim不是从深度V20官方源里安装的．从官方源安装的vim没有问题．



运行"apt policy vim"查看是从哪个源安装的，然后关闭那个源，卸载vim, 重新安装．

随意添加软件源，会有很多难以预料，稀奇古怪的问题．必须要小心．在充分了解后果的情况下再使用其它非官方源．