palopezv [1] filed a deletion request for calypso [2]:

It hasn't been updated in a long time, much longer than the out-of- date flag. There is another package in AUR, wp-desktop, properly named and maintained.

[1] https://aur.archlinux.org/account/palopezv/ [2] https://aur.archlinux.org/pkgbase/calypso/