[kibwen]

Gmane was just a nice interface for reading mailing lists, in this case it was just referring to some thread on the old rust-dev mailing list, which is archived at https://mail.mozilla.org/pipermail/rust-dev/ . Sadly I can't tell exactly which thread it was, but I'm guessing it was https://mail.mozilla.org/pipermail/rust-dev/2013-January/002... .

(Niko also once wrote a blog post which gives an overview of the old purity system: https://smallcultfollowing.com/babysteps/blog/2012/10/12/ext... )

[steveklabnik]

I knew it was, but couldn't find a rust-dev post with "pure" in the same time-frame. Thank you! Yours may be it, but I think est has a convincing case that it was the thread this one spun out from...

Thanks for that link to Niko's blog too!