Portage now supports pypy as the backend.

[teika]

Portage now supports pypy (Wikipedia article) as the backend; add USE="pypy -python2 -python3" to emerge portage.

The good news is it's said to be faster than CPython. The bad news is, building of pypy takes long; seems some 13 times of building a kernel.

If you're screwed up, you can install the portage binary from the tinderbox. default-linux/<your arch> is a moderate choice.

Enjoy. I won't try it. =P
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[cgw]

Is anyone using pypy for portage? I tried "USE=-python2 -python3 pypy1_9" and /usr/bin/emerge still runs with cpython2.7, not pypy. I created (possibly prematurely?) a bug report for this, containing more detail.

https://bugs.gentoo.org/show_bug.cgi?id=437198

[cgw]

Turns out the USE flag was masked (in /usr/portage/profiles/package.use.mask). Adding
a file /etc/portage/profile/package.use.mask/portage.use.mask containing the line
sys-apps/portage -pypy1_9
is sufficient to unmask the pypy1_9 USE flag.

(Clearly, I didn't know about masked USE flags, with Gentoo there's always something new to learn!)

[one_and_only]

anybody using/hacking pypy backend?

edit: quick benchmark of emerge -auND @world for quite not up-to-date system (time of resolving update graph, not the whole emerging):