The plugin is for Gimp 2.10.x that is installed from the otto-kesselgulasch/gimp PPA This also contains the required (by Gimp) gegl 0.4
For Gimp 2.10 installation hints, see: https://www.gimp-forum.net/Thread-Gimp-2...-18-04-LTS
(A general note for users) If you are using Gimp 2.8. This is not the version for you. Use the 2.8 version from http://www.gmic.eu
If you are using a Gimp 2.10.x flatpak or snap, then these do not support QT required by the gmic_gimp_qt plugin. The plugin will not work.
Edit: Flatpak Gimp now has a flatpak gmic_gimp_qt that the user can install.
No use trying to run the plugin, has to be used from within Gimp 2.10. If you want the standalone gmic application again use a package from http://www.gmic.eu
For Gimp 2.10 installation hints, see: https://www.gimp-forum.net/Thread-Gimp-2...-18-04-LTS
(A general note for users) If you are using Gimp 2.8. This is not the version for you. Use the 2.8 version from http://www.gmic.eu
If you are using a Gimp 2.10.x flatpak or snap, then these do not support QT required by the gmic_gimp_qt plugin. The plugin will not work.
Edit: Flatpak Gimp now has a flatpak gmic_gimp_qt that the user can install.
No use trying to run the plugin, has to be used from within Gimp 2.10. If you want the standalone gmic application again use a package from http://www.gmic.eu