Version 4 is available upstream. Please consider updating!
It seems that version 4 is available upstream, while the latest version in the Gentoo tree is 2.2.2_p12.
You think this warning is false? Read more about it here.

Available Versions

Versionamd64x86alphaarmarm64hppamipsppcppc64riscvsparc
2.2.2_p12  : 0 EAPI 7 amd64 x86?alpha?arm?arm64?hppa?mips ppc?ppc64?riscv?sparc

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