The new app-text/ghostscript ebuild breaks (omits) the hpijs support present in the 6.50-r4 ebuild. The new build is based on the older r3 ebuild. At the moment there isn't an ebuild for hpijs (I've submitted a second revision of it but it's been sat there in bugzilla ignored for weeks). Without the support being compiled into ghostscript it's useless anyway. It also means Gentoo users with Hewlett Packard printers are condemned to using the gimp-print driver the output quality of which is far lower than that provided by HPs own driver
Sorry My misunderstanding...ijs is in by default in gs. It doesn't need to be compiled in.