步骤：

sudo apt install flatpak

flatpak install flathub org.cloudcompare.CloudCompare

此时会有报错：

error: No remote refs found similar to ‘flathub’

执行

flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

或者

flatpak remote-add --user --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

重新执行：

flatpak install flathub org.cloudcompare.CloudCompare

安装完毕：

打开该软件，直接将点云文件drag and drop到显示区即可（貌似从open里选择的话，无法找到点云文件）

参考：

• CloudCompare Download
• Getting this error when trying to use flatpak, “No remote refs found similar to ‘flathub’”