我通过在终端中运行命令来安装 GIMP，如https://www.gimp.org/downloads/所示
flatpak install https://flathub.org/repo/appstream/org.gimp.GIMP.flatpakref
输出
This application depends on runtimes from:
https://dl.flathub.org/repo/
Configure this as new remote 'flathub' [y/n]: y
Installing: org.gimp.GIMP/x86_64/stable
Required runtime for org.gimp.GIMP/x86_64/stable (org.gnome.Platform/x86_64/3.24) is not installed, searching...
Found in remote flathub, do you want to install it? [y/n]: y
Installing: org.gnome.Platform/x86_64/3.24 from flathub
[####################] 10 delta parts, 72 loose fetched; 196650 KiB transferred
Installing: org.freedesktop.Platform.ffmpeg/x86_64/1.6 from flathub
[####################] 1 delta parts, 2 loose fetched; 2649 KiB transferred in 9
Installing: org.gtk.Gtk3theme.Ambiance/x86_64/3.22 from flathub …