x11-libs/cairo requires svg use flag but the current version does not have it

[hungshihhan]

I am trying to get unity installed on gentoo but found x11-libs/gtk+ requires x11-libs/cairo to enable svg use flag, which the current version doesn't have.

emerge: there are no ebuilds built with USE flags to satisfy ">=x11-libs/cairo-1.12.14-r4:=[aqua?,svg,abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_s390_32(-)?,abi_s390_64(-)?]".
!!! One of the following packages is required to complete your request:
- x11-libs/cairo-1.17.8::gentoo (Missing IUSE: svg)
(dependency required by "x11-libs/gtk+-2.24.33_p_p2_p02-r2::unity-gentoo" [ebuild])
(dependency required by "net-dialup/ppp-2.5.0-r3::gentoo[gtk]" [installed])
(dependency required by "net-misc/networkmanager-1.42.6-r1::gentoo" [installed])
(dependency required by "dev-qt/qtnetwork-5.15.9::gentoo[networkmanager]" [installed])
(dependency required by "dev-qt/qtdeclarative-5.15.9::gentoo" [installed])
...

ebuild of x11-libs/cairo-1.17.8::gentoo

...
IUSE="X aqua debug +glib gtk-doc test"
...

[ThePelicano]

i have the same problem

[cyg0]

same issue