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getting rid of 1st copy of GIMP
Greetings, folks--
My problem is that I have 2 versions of GIMP installed on my computer (Linux Mint 19.1), 2.10.14 and 2.10.18.  I try to get rid of GIMP 2.10.14 and it looks like it is gone entirely, but when I go to install G'mic on GIMP 2.10.18 it brings back 2.10.14 and puts G'mic in that installation!  This has happened repeatedly so it is not a fluke.  Does anyone have any idea how I can get rid the 2.10.14 but have G'mic installed on the 2.10.18?  Thanks so much for your help.
How do you have installed the 2 GIMP versions and G'mic (Mint packages, flatpack, manually compiled, ...) ?

Using LM19 then Gimp 2.10.14 comes from the 'otto..' PPA 
How did you remove Gimp 2.10.14 ? sudo apt purge gimp should work. 

However the PPA remains in the repository source list and;

If you use apt to install gmic_gimp_qt then Gimp 2.10.14 is a dependency and will want to re-install from the PPA
If using a .deb package from the gmic site, chances are the same happens with the added disadvantage that the plugin does not work with LM19 / 'buntu 18.04 and spin-offs

After first purging Gimp, remove the PPA from the repo sources
sudo apt install ppa-purge
sudo ppa-purge ppa:otto-kesselgulasch/gimp
sudo apt update

Still not the solution because
A Gimp 2.10.18 - a flatpak or a snap.  Start Gimp Look in Edit -> Preferences -> Folders. The plug-ins folder might look like this


Flatpak is a 'sandboxed' application. You can add scripts and plugins with reservations. Compiled plugins with un-met dependencies will not work. That includes gimp_gmic_qt which requires the QT libraries 
Not included in the flatpak. Not possible at present = no gimp_gmic_qt

At the moment, if you want to use Gimp 2.10.18 and gimp_gmic_qt in a LM 19 the option is an appimage from  Look under Assets for the 2.10.18 with plugins file. (164 MB) This comes with gimp_gmic_qt preinstalled.  It will also co-exist with other Gimp installations.
Thank-you tmanni and rick2005--
It looks like the appimage is the way to go, without having to mess with the G'mic installation.  A couple of questions before I get rid of both of my installations of GIMP and go only with the app image: How do you save brushes, etc., that you have added to the appimage version of GIMP?  Do you have to make directories for this or does it include it in the appimage?  I am not concerned with the current brushes and such, I just want to make sure that when I add new there is a place for new ones to go and be usable the next time I open the appimage GIMP.
Again, thank-you for your help!
My advice, keep your existing Gimp installation (flatpak?) until happy with the appimage.

It works by: Make the appimage file executable, run it (maybe make a launcher for it) and it unpacks to a temporary folder in ./tmp When you close Gimp that folder is deleted.

What it does make is a permanent user Gimp profile. In this case it is ~/.config/GIMP-AppImage/2.10/ Just the same as a regular Gimp profile. All the folders there for your brushes / scripts / plug-ins etc.

This is a good and flexible alternative to the PPA. I use (k)ubuntu 18.04 so a real interest in when it might update. The maintainer Thorsten Stettin is having real problems with building Gimp 2.10.18 Latest fail is GEGL I hope it is eventually sorted out. Not holding my breath.

Just as an example:
I keep a Gimp 2.10.14 from the PPA with a gimp_gmic_qt 2.9.1 from here:
A Gimp 2.10.18 appimage. I do like the new condensed tools / tool options

All sorts of things you can do in linux Wink
Thanks again for the help, rich2005--
I decided to keep the 2.10.14 version, installed via the Software Manager of LM19, and ditch the flatpak 2.10.18 for the appimage of 2.10.19!  Now I have the backup should I try to do something that 2.10.19 refuses to do.  I really like the Check for Updates button on the Help-About of .19.  Any idea whether the appimage will auto-update when a new version of GIMP comes down the pipe?
(04-17-2020, 06:01 PM)petedecember Wrote: .... I really like the Check for Updates button on the Help-About of .19.  Any idea whether the appimage will auto-update when a new version of GIMP comes down the pipe?

I do not think the auto-update will work with the appimage, although you might get a notification. Really it is more for Windows users.

The 2.10.19 appimage is auto-made every Thursday with the code updates (until some change screws the auto process up - it has happened Wink )

Up to you how often you want to download a new version.

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