[boost] meta/libraries.json question

Subject: [boost] meta/libraries.json question
From: Antony Polukhin (antoshkka_at_[hidden])
Date: 2018-06-11 11:36:03

Hello,

I see that I can specify
    "std": [ "proposal" ],
in meta/libraries.json.

What are the other options? Can I write "с++17" instead of "proposal"
(for Any and Variant)?

-- 
Best regards,
Antony Polukhin