trav90 [1] filed a deletion request for palemoon-26 [2]: The build configuration used by this package does not produce binaries that are acceptable for official branding and therefore are in violation of the Pale Moon Redistribution License located at https://www.palemoon.org/redist.shtml. Also, this is an old version that is no longer supported by the Pale Moon team. Add-ons using the Jetpack SDK will work again in the next (supported) release of Pale Moon, making this package unnecessary. Thanks for your time, Travis Wine (trava90) Pale Moon Project Linux Maintainer [1] https://aur.archlinux.org/account/trav90/ [2] https://aur.archlinux.org/pkgbase/palemoon-26/