Proposal to add "features" to standard library

[newpavlov]

I think it should be handled not by features, but by splitting std into a number of "standard" crates. Here is an old thread which discusses such approach:

Refactoring std for ultimate portability

Rust is really super portable. It supports a lot of platforms. But not enough ... not nearly enough. Rust wants to be everywhere, in wild places that only future generations will be able to imagine. We've got some work yet to enable that future though, and it is our responsibility to the Rusting world to do so! Rust has long been designed with portability at the forefront. It contains relatively few designs that enforce hard restrictions on the underlying plattform, and where it does there are …

Though I must say that the security motivation looks quite weak to me. As already noted, malicious code can easily circumvent such "protection".