I just prepared a new GIMP AppImage package, using the latest code from GIT: https://pixls.us/files/gimp-2.9.5-20170508.glibc2.15.glibc2.15-x86_64.AppImage
One of the big new things is the possibility to choose the RAW loader plug-in from the preferences (see this post here on pixls.us):
I have also bundled into the AppImage the latest version of nuFRAW, patched to make it compatible with the new RAW loader chooser in the GIMP preferences (actually only one line of code added).
Thanks to that, the user can now choose among three RAW loaders: nuFRAW, Darktable and PhotoFlow. The last two need external programs (the photoflow plug-in can also use the PhF AppImage, see this post for instructions), while nuFRAW works out-of-the-box.
The only problem is that the latest GIMP requires a version of Glib newer than that available on my build system, and so I had to build Glib from sources an bundle it into the AppImage.
Now being 100% sure of what I did, I would like to ask some of you to test the AppImage before updating the link in the “community software” post. Maybe @probono, @rich2005, @paperdigits or @heckflosse can give it a quick go and see of they get some problems?
For the future, I plan to set-up a full Glib/GTK environment using jhbuild, so that the AppImage will provide up-to-date GTK libraries regardless of what is available on the build system, but it will take some time until his will be fully tested and reliable…