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pkgsrc notes:
* The build requires binary bootstraps built by the Rust team. Due
to the requirement that only the previous version is supported as
a bootstrap compiler, and new versions of Rust are released every
6 weeks, it is unlikely to be practical to build TNF bootstraps.
Users should evaluate whether they trust binaries from upstream.
* There is currently no SunOS bootstrap provided by the Rust team,
so for now a version built by myself is provided by Joyent.
* Only Darwin/Linux/SunOS are currently supported. The Rust team do
provide NetBSD bootstraps so support should be easy enough to add.
Information about Rust from the DESCR:
Rust is a systems programming language focused on three goals: safety,
speed, and concurrency. It maintains these goals without having a
garbage collector, making it a useful language for a number of use cases
other languages aren't good at: embedding in other languages, programs
with specific space and time requirements, and writing low-level code,
like device drivers and operating systems.
It improves on current languages targeting this space by having a number
of compile-time safety checks that produce no runtime overhead, while
eliminating all data races. Rust also aims to achieve "zero-cost
abstractions" even though some of these abstractions feel like those of
a high-level language. Even then, Rust still allows precise control
like a low-level language would.
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