somebody [1] filed a request to merge pharo [2] into pharo-bin [3]: see pkgbuilds - it's not exactly the same but it seems like both are binary versions? + it seems that pharo-bin's pkgbuild was based off pharo's?
[1] https://aur.archlinux.org/account/somebody/ [2] https://aur.archlinux.org/pkgbase/pharo/ [3] https://aur.archlinux.org/pkgbase/pharo-bin/
