guotsuan [1] filed a deletion request for gegl-legacy [2]:

The purpose of the package was to service the GIMP painter (a variation of GIMP) which is in diffculty to upgrade with GIMP 2.8.x. Now it is no longer a problem for GIMP Painter. This package is therefore not needed by any other package.

[1] https://aur.archlinux.org/account/guotsuan/ [2] https://aur.archlinux.org/pkgbase/gegl-legacy/