/var/db/repos/gentoo/profiles/base/package.use.stable.mask: # Kent Fredric <kentnl@gentoo.org> (2019-07-30) # These features require dev-perl/GD, which currently can't be # considered stable due to serious defects upstream. Bug #661634 app-misc/g15daemon perl dev-lang/php coverage dev-perl/Business-ISBN barcode dev-perl/Template-Toolkit gd media-fonts/unifont utils fontforge media-video/vdrsync dvdr That bug seems to have been declared solved, yet these packages can't be built. This is just a suggestion to revisit whether this blob should be removed or not. I can not judge the overall stability of the dev-perl/GD library, but i did override this mask and successfully install a package (logitechmediaserver) depending on dev-perl/Template-Toolkit with gd. Not sure whether this is helpfull evidence of gd being good enough to remove the above mask or not. See discuss in https://forums.gentoo.org/viewtopic-t-1171827-highlight-.html
