>>64081044
it's available in the AUR, if you compile manually the gtk3 patch is only compatible with a specific git checkout version as compile fails with the latest tarball
here are the patches:
>gtk3
https://gist.githubusercontent.com/Dudemanguy911/c172394e30e1e7d0f477ad15c719bc71/raw/$543fa1dc7173d896f8d87bece94ae23944dd1e76/gtk3-filechooser-icon-view.patch
>gtk2
https://gist.githubusercontent.com/Dudemanguy911/d70734d5bdf82e79cbfb22894fac8a1b/raw/0c714824e9baedbb0fce9bb0940b19d073771a77/gtk2-filechooser-icon-v
iew.patch
>glib
https://gist.githubusercontent.com/ahodesuka/49c1d0eea4b64f24c4c7/raw/d0edf118e1c27700300038c1d82b3ff775c0216b/glib-thumbnailer.patch

gtk+3 commit is 3a1a7135a276f2b6336c7566f6342da739a41d39

so you would do
>git clone git://git.gnome.org/gtk+
>git checkout 'commit'