Case_Of [1] filed a request to merge firefox-gtk2 [2] into firefox- esr-gtk2 [3]: Hello, Mozilla has dropped gtk2 support in Firefox v53, but it is still possible to use it on v52 ESR branch. After talking to bidulock in the comments, we found out that is a good idea to create firefox-esr-gtk2 package and merging firefox-gtk2 with it. Sincerely, Case_Of. [1] https://aur.archlinux.org/account/Case_Of/ [2] https://aur.archlinux.org/pkgbase/firefox-gtk2/ [3] https://aur.archlinux.org/pkgbase/firefox-esr-gtk2/